Update README.md

Author: t32k

README.md

@@ -1,15 +1,19 @@
 # Maple 
 
-This is alpha version, yet.
+This project is alpha version, forever.
 
 ## Features
 
 Require [PostCSS](https://github.com/postcss/postcss).
 
 ### Plugins
 
-+ 
++ [autoprefixer](https://github.com/postcss/autoprefixer)
++ [postcss-calc](https://github.com/postcss/postcss-calc)
++ [postcss-custom-properties](https://github.com/postcss/postcss-custom-properties)
++ [postcss-import](https://github.com/postcss/postcss-import)
 + [cssnano](https://github.com/ben-eb/cssnano)
++ [stylelint](http://stylelint.io/)
 
 ## Installation
 

dest/css/maple.css

@@ -2,11 +2,4 @@
 @import "core/reset.css";
 @import "core/base.css";
 @import "core/utility";
-@import "ui/button.css";
-
-
-a {
-
-    content: '';
-    color: red
-}
+@import "ui/button.css";