Add additional information to package.json

package.json

@@ -1,7 +1,25 @@
 {
   "name": "perfect-scrollbar",
   "version": "0.5.3",
+  "description": "Tiny but perfect jquery scrollbar plugin.",
+  "author": "Hyunje Alex Jun <me@noraesae.net>",
+  "contributors": [{
+    "name": "Hyunje Alex Jun",
+    "email": "me@noraesae.net"
+  }],
   "main": "src/perfect-scrollbar.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/noraesae/perfect-scrollbar"
+  },
+  "bugs": {
+    "url": "https://github.com/noraesae/perfect-scrollbar/issues"
+  },
+  "keywords": [
+    "jquery-plugin",
+    "scroll",
+    "scrollbar"
+  ],
   "engines": {
     "node": ">= 0.8.0"
   },
@@ -16,5 +34,6 @@
   },
   "scripts": {
     "test": "grunt travis --verbose"
-  }
+  },
+  "license": "MIT"
 }