Release 0.6.0

It's a huge change! #277

1. Use Browserify to make the source tree modular.
2. Be independent from jQuery.
3. npm with browserify compatibility.
4. Separate a bower repo.
5. Bug Fixes.

package.json

@@ -1,7 +1,7 @@
 {
   "name": "perfect-scrollbar",
-  "version": "0.5.9",
-  "description": "Tiny but perfect jquery scrollbar plugin.",
+  "version": "0.6.0",
+  "description": "Minimalistic but perfect custom scrollbar plugin",
   "author": "Hyunje Alex Jun <me@noraesae.net>",
   "contributors": [
     {
@@ -19,6 +19,7 @@
   },
   "keywords": [
     "jquery-plugin",
+    "frontend",
     "scroll",
     "scrollbar"
   ],