Closes #78. Improve startup performance.

@Glavin001 stats:
- Before: 226ms
- After: 60ms

lib/beautify.coffee

@@ -1,15 +1,17 @@
 # global atom
 
 "use strict"
+# Dependencies
 plugin = module.exports
-fs = require("fs")
-path = require("path")
 _ = require("lodash")
-strip = require("strip-json-comments")
-yaml = require("js-yaml")
 beautifier = require("./language-options")
 languages = beautifier.languages
 defaultLanguageOptions = beautifier.defaultLanguageOptions
+# Lazy loaded dependencies
+fs = null
+path = null
+strip = null
+yaml = null
 #MessageView = require "./message-view"
 findFileResults = {}
 
@@ -42,6 +44,7 @@ setCursors = (editor, posArray) ->
   return
 
 verifyExists = (fullPath) ->
+  fs ?= require("fs")
   (if fs.existsSync(fullPath) then fullPath else null)
 
 # Storage for memoized results from find file
@@ -60,6 +63,7 @@ current working directory)
 @returns {string} normalized filename
 ###
 findFile = (name, dir) ->
+  path ?= require("path")
   dir = dir or process.cwd()
   filename = path.normalize(path.join(dir, name))
   return findFileResults[filename] if findFileResults[filename] isnt `undefined`
@@ -82,6 +86,7 @@ or in the home directory. Configuration files are named
 @returns {string} a path to the config file
 ###
 findConfig = (config, file) ->
+  path ?= require("path")
   dir = path.dirname(path.resolve(file))
   envs = getUserHome()
   home = path.normalize(path.join(envs, config))
@@ -121,19 +126,22 @@ beautify = ->
     configPath = findConfig(".jsbeautifyrc", startPath)
     externalOptions = undefined
     if configPath
+      fs ?= require("fs")
       contents = fs.readFileSync(configPath,
         encoding: "utf8"
       )
       unless contents
         externalOptions = {}
       else
         try
+          strip ?= require("strip-json-comments")
           externalOptions = JSON.parse(strip(contents))
         catch e
           console.log "Failed parsing config as JSON: " + configPath
 
           # Attempt as YAML
           try
+            yaml ?= require("js-yaml")
             externalOptions = yaml.safeLoad(contents)
           catch e
             console.log "Failed parsing config as YAML: " + configPath

lib/language-options.coffee

@@ -2,20 +2,20 @@
 Language Support and default options.
 ###
 "use strict"
-_ = require("lodash")
-extend = require("extend")
-
+# Lazy loaded dependencies
+_ = null
+extend = null
 # Language Beautifiers
-beautifyJS = require("js-beautify")
-beautifyHTML = require("js-beautify").html
-beautifyCSS = require("js-beautify").css
-beautifySQL = require("./langs/sql-beautify")
-beautifyPHP = require("./langs/php-beautify")
-beautifyPython = require("./langs/python-beautify")
-beautifyRuby = require("./langs/ruby-beautify")
-beautifyLESS = require("./langs/less-beautify")
-beautifyCoffeeScript = require("./langs/coffeescript-beautify")
-uncrustifyBeautifier = require("./langs/uncrustify/")
+beautifyJS = null
+beautifyHTML = null
+beautifyCSS = null
+beautifySQL = null
+beautifyPHP = null
+beautifyPython = null
+beautifyRuby = null
+beautifyLESS = null
+beautifyCoffeeScript = null
+uncrustifyBeautifier = null
 
 # Misc
 Analytics = require("analytics-node")
@@ -128,72 +128,85 @@ module.exports =
   # Process each language
   beautify: (text, grammar, allOptions, beautifyCompleted) ->
     self = this
-
     # Beautify!
     unsupportedGrammar = false
     options = undefined
     switch grammar
-
       # Treat JSON as JavaScript, because it will support comments.
       # And Glavin001 has tested JSON beauifying with beautifyJS.
       when "JSON", "JavaScript"
+        beautifyJS ?= require("js-beautify")
         text = beautifyJS(text, self.getOptions("js", allOptions))
         beautifyCompleted text
       when "CoffeeScript"
+        beautifyCoffeeScript ?= require("./langs/coffeescript-beautify")
         beautifyCoffeeScript text, self.getOptions("js", allOptions), beautifyCompleted
       when "Handlebars"
-
         # jshint ignore: start
         allOptions.push indent_handlebars: true # Force jsbeautify to indent_handlebars
-
       # jshint ignore: end
       when "HTML (Liquid)", "HTML", "XML"
+        beautifyHTML ?= require("js-beautify").html
         text = beautifyHTML(text, self.getOptions("html", allOptions))
         beautifyCompleted text
       when "CSS"
+        beautifyCSS ?= require("js-beautify").css
         text = beautifyCSS(text, self.getOptions("css", allOptions))
         beautifyCompleted text
       when "Sass", "SCSS", "LESS"
+        beautifyLESS ?= require("./langs/less-beautify")
         beautifyLESS text, self.getOptions("css", allOptions), beautifyCompleted
       when "SQL (Rails)", "SQL"
+        beautifySQL ?= require("./langs/sql-beautify")
         beautifySQL text, self.getOptions("sql", allOptions), beautifyCompleted
       when "PHP"
+        beautifyPHP ?= require("./langs/php-beautify")
         beautifyPHP text, self.getOptions("php", allOptions), beautifyCompleted
       when "Python"
+        beautifyPython ?= require("./langs/python-beautify")
         beautifyPython text, self.getOptions("python", allOptions), beautifyCompleted
       when "Ruby"
+        beautifyRuby ?= require("./langs/ruby-beautify")
         beautifyRuby text, self.getOptions("ruby", allOptions), beautifyCompleted
       when "C"
         options = self.getOptions("c", allOptions)
         options.languageOverride = "C"
+        uncrustifyBeautifier ?= require("./langs/uncrustify/")
         uncrustifyBeautifier text, options, beautifyCompleted
       when "C++"
         options = self.getOptions("cpp", allOptions)
         options.languageOverride = "CPP"
+        uncrustifyBeautifier ?= require("./langs/uncrustify/")
         uncrustifyBeautifier text, options, beautifyCompleted
       when "C#"
         options = self.getOptions("cs", allOptions)
         options.languageOverride = "CS"
+        uncrustifyBeautifier ?= require("./langs/uncrustify/")
         uncrustifyBeautifier text, options, beautifyCompleted
       when "Objective-C", "Objective-C++"
         options = self.getOptions("objectivec", allOptions)
         options.languageOverride = "OC+"
+        uncrustifyBeautifier ?= require("./langs/uncrustify/")
         uncrustifyBeautifier text, options, beautifyCompleted
       when "D"
         options = self.getOptions("d", allOptions)
         options.languageOverride = "D"
+        uncrustifyBeautifier ?= require("./langs/uncrustify/")
         uncrustifyBeautifier text, options, beautifyCompleted
       when "Pawn"
         options = self.getOptions("pawn", allOptions)
         options.languageOverride = "PAWN"
+        uncrustifyBeautifier ?= require("./langs/uncrustify/")
         uncrustifyBeautifier text, options, beautifyCompleted
       when "Vala"
         options = self.getOptions("vala", allOptions)
         options.languageOverride = "VALA"
+        uncrustifyBeautifier ?= require("./langs/uncrustify/")
         uncrustifyBeautifier text, options, beautifyCompleted
       when "Java"
         options = self.getOptions("java", allOptions)
         options.languageOverride = "JAVA"
+        uncrustifyBeautifier ?= require("./langs/uncrustify/")
         uncrustifyBeautifier text, options, beautifyCompleted
       else
         unsupportedGrammar = true
@@ -225,36 +238,31 @@ module.exports =
 
   getOptions: (selection, allOptions) ->
     self = this
-
+    _ ?= require("lodash")
+    extend ?= require("extend")
     # console.log(selection, allOptions);
-
     # Reduce all options into correctly merged options.
     options = _.reduce(allOptions, (result, currOptions) ->
       containsNested = false
       collectedConfig = {}
       key = undefined
-
       # Check to see if config file uses nested object format to split up js/css/html options
       for key of currOptions
         # Check if is supported language
         if _.indexOf(self.languages, key) >= 0 and typeof currOptions[key] is "object" # Check if nested object (more options in value)
           containsNested = true
           break # Found, break out of loop, no need to continue
-
       # console.log(containsNested, currOptions);
-
       # Create a flat object of config options if nested format was used
       unless containsNested
         _.merge collectedConfig, currOptions
       else
-
         # Merge with selected options
         # where `selection` could be `html`, `js`, 'css', etc
         # console.log(selection, currOptions[selection]);
         _.merge collectedConfig, currOptions[selection]
       extend result, collectedConfig
     , {})
-
     # TODO: Clean.
     # There is a bug in nopt
     # See https://github.com/npm/nopt/issues/38#issuecomment-45971505