Update dependencies. (#58)

README.md

@@ -7,6 +7,7 @@ Unprefixes vendor prefixes in legacy CSS.
 [![Travis](https://img.shields.io/travis/gucong3000/postcss-unprefix.svg?&label=Linux)](https://travis-ci.org/gucong3000/postcss-unprefix)
 [![AppVeyor](https://img.shields.io/appveyor/ci/gucong3000/postcss-unprefix.svg?&label=Windows)](https://ci.appveyor.com/project/gucong3000/postcss-unprefix)
 [![Codecov](https://img.shields.io/codecov/c/github/gucong3000/postcss-unprefix.svg)](https://codecov.io/gh/gucong3000/postcss-unprefix)
+[![David](https://img.shields.io/david/gucong3000/postcss-unprefix.svg)](https://david-dm.org/gucong3000/postcss-unprefix)
 
 Though, please use [`autoprefixer`](https://github.com/postcss/autoprefixer) as part of your build process to ensure proper browser support.
 
@@ -21,7 +22,7 @@ npm install --save postcss-unprefix
 ## Usage
 
 ```javascript
-var postcss = require("gulp-postcss");
+var postcss = require("gulp-html-postcss");
 var unprefix = require("postcss-unprefix");
 var autoprefixer = require("autoprefixer");
 

package.json

@@ -4,10 +4,10 @@
     "url": "https://github.com/gucong3000/postcss-unprefix/issues"
   },
   "dependencies": {
-    "autoprefixer": "^8.0.0",
+    "autoprefixer": "^8.1.0",
     "known-css-properties": "^0.6.1",
     "normalize-range": "^0.1.2",
-    "postcss": "^6.0.16",
+    "postcss": "^6.0.19",
     "postcss-selector-parser": "^3.1.1",
     "postcss-value-parser": "^3.3.0",
     "pseudo-classes": "^1.0.0",
@@ -16,17 +16,17 @@
   "description": "Unprefixes vendor prefixes in legacy CSS.",
   "devDependencies": {
     "codecov": "^3.0.0",
-    "eslint": "^4.16.0",
-    "eslint-config-standard": "^11.0.0-beta.0",
-    "eslint-plugin-import": "^2.8.0",
-    "eslint-plugin-node": "^6.0.0",
-    "eslint-plugin-promise": "^3.6.0",
+    "eslint": "^4.18.2",
+    "eslint-config-standard": "^11.0.0",
+    "eslint-plugin-import": "^2.9.0",
+    "eslint-plugin-node": "^6.0.1",
+    "eslint-plugin-promise": "^3.7.0",
     "eslint-plugin-standard": "^3.0.1",
-    "mocha": "^5.0.0",
-    "nyc": "^11.4.1",
+    "mocha": "^5.0.4",
+    "nyc": "^11.6.0",
     "postcss-less": "^1.1.3",
     "postcss-reporter": "^5.0.0",
-    "stylelint": "^9.1.1"
+    "stylelint": "^9.1.3"
   },
   "homepage": "https://github.com/gucong3000/postcss-unprefix#readme",
   "keywords": [