improved package.json

package.json

   "description": "A utility to add browser prefixes to CSS.",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "mocha"
+  },
+  "author": {
+    "name": "Martin Dørum Nygaard",
+    "email": "martid0311@gmail.com",
+    "url": "http://mort.coffee"
   },
-  "author": "Martin Dørum Nygaard",
   "license": "MIT",
   "bin": {
     "browser-prefix": "./cli.js"
+  },
+  "keywords": ["css", "prefix", "browser", "vendor"],
+  "repository": {
+    "type": "git",
+    "url": "http://git.mort.coffee/mort/browser-prefix.git"
   }
 }