diff --git a/README.md b/README.md
new file mode 100644
index 0000000..8798ca6
--- /dev/null
+++ b/README.md
@@ -0,0 +1,173 @@
+# vue-sfc-split
+
+Convert SFCs for use without build
+
+## What it does
+
+* Converts `.vue` files into `.js` and `.css` files
+* Includes template into script
+* Auto-attaches generated css file
+* Preserves `scoped` styles
+* Supports SCSS
+* Maintains structure
+* Rewrites imorts
+
+## Installation & Usage
+
+### Global
+Install:
+```bash
+npm i -g vue-sfc-split
+```
+Run from project root:
+```bash
+vue-sfc-split
+```
+
+### Local (npm scripts)
+Install:
+```bash
+npm i vue-sfc-split
+```
+Add npm script to `package.json`:
+```json
+"scripts": {
+  "split": "vue-sfc-split"
+},
+```
+Run from project root:
+```bash
+npm run split
+```
+
+## Options
+`--ignore` patterns to ignore directories
+`--noscope` ignore scoped css, and treat it like usual css
+`--dest` destination folder
+`--tab` this will be used to indent template entry in script
+
+### --ignore
+Comma separated list of glob patterns
+
+`node_modules` is always ignored
+```bash
+vue-sfc-split --ignore=directory/*,directory-recursive/**
+```
+
+### --noscope
+If this is specified scoped css will have no effect, all styles will be treated as unscoped
+```bash
+vue-sfc-split --noscope
+```
+
+### --dest
+Where the output files will go
+
+Default: `dest/`
+
+Set this to an empty string to create `.js` and `.css` files next to original `.vue` files
+```bash
+vue-sfc-split --dest=""
+```
+
+## Scope
+Scoped styles are processed similarly to [how vue does it](https://v3.vuejs.org/api/sfc-style.html#style-scoped)
+
+Custom `data-scope-*` attribute will be added to scoped style selectors and template elements
+
+Scope name is created based on file name and its path, keeping generated scope names predictable and non-duplicating
+
+For example this in file `hello.vue`
+```xml
+<div>Hola</div>
+<style scoped>
+div {
+  color: pink;
+}
+</style>
+```
+Will get converted to this
+```xml
+<div data-scope-hello>Hola</div>
+<style scoped>
+div[data-scope-hello] {
+  color: pink;
+}
+</style>
+```
+This can be disabled by specifying `--noscope`
+
+## Imports
+In the output files all `.vue` imports will automatically be rewritten to target newly created `.js` files instead
+
+## Style attachment
+Generated `.css` files will be automatically attached from generated `.js` files in this manner:
+```javascript
+fetch('hello.css')
+  .then(res => res.text())
+  .then(style => document.head.insertAdjacentHTML('beforeend', '<style>'+style+'</style>'))
+```
+
+## I/O example
+### Input
+__hello.vue__:
+```xml
+<template>
+   <div class="container">
+      <h1>{{text}}</h1>
+      <Two />
+   </div>
+</template>
+
+<script>
+import Two from './two.vue'
+
+export default {
+   name: 'One',
+   components: { Two, DeeperTwo },
+   data() {
+      return {
+         text: 'Hello from component One'
+      }
+   },
+}
+</script>
+
+<style scoped>
+.container {
+   background: silver;
+}
+</style>
+```
+### Output
+__hello.js__:
+```javascript
+import Two from './two.js'
+
+export default {
+  template: `
+<div class="container" data-scope-hello>
+   <h1>{{text}}</h1>
+   <Two></Two>
+</div>`,
+   name: 'One',
+   components: { Two, DeeperTwo },
+   data() {
+      return {
+         text: 'Hello from component One'
+      }
+   },
+}
+
+// attach styles
+fetch('hello.css').then(res => res.text()).then(style => document.head.insertAdjacentHTML('beforeend', '<style>'+style+'</style>'))
+```
+__hello.css__
+```css
+.container[data-scope-hello] {
+   background: silver;
+}
+```
+
+
+
diff --git a/convert.js b/convert.js
index d6ffaf9..8d4b893 100644
--- a/convert.js
+++ b/convert.js
@@ -14,26 +14,24 @@ const htmlparser = require('node-html-parser')
 
 const args = minimist(process.argv.slice(2))
 const opts = {
-  tab: '  ',
   ignore: ['node_modules/**'],
   noscope: false,
   dest: 'dist/',
 }
 
-opts.tab = args.tab != undefined ? args.tab : opts.tab
 opts.ignore = args.ignore ? opts.ignore.concat(args.ignore.split(',')) : opts.ignore
-opts.dest = args.dest
-            ? args.dest.slice(-1) != '/'
+opts.dest = args.dest != undefined
+            ? args.dest && args.dest.slice(-1) != '/'
               ? args.dest+'/'
               : args.dest
             : opts.dest
 opts.noscope = args.noscope ? true : false
 
+const tab = '  '
 
 
 const files = glob.sync('**/*.vue', { ignore: opts.ignore })
 
-
 files.forEach(file => {
 
   const pathParse = path.parse(file)
@@ -182,7 +180,7 @@ files.forEach(file => {
       if (match) {
         // there is a default export, append template to it
         script = script.replace(
-          match[0], match[0] + '\n' + opts.tab + templateString
+          match[0], match[0] + '\n' + tab + templateString
         )
       } else {
         warnings.push('can\'t find default export')