add license and authors to bower.json, use minified js by default

Author: mikegreiling

bower.json

@@ -3,7 +3,11 @@
   "version": "1.3.1",
   "homepage": "http://pixelcog.com/parallax.js/",
   "description": "Simple parallax scrolling effect inspired by spotify.com implemented as a jQuery plugin",
-  "main": "parallax.js",
+  "authors": [
+    "Mike Greiling <mike@pixelcog.com> (http://pixelcog.com)"
+  ],
+  "main": "parallax.min.js",
+  "license": "MIT",
   "keywords" : ["parallax", "scroll", "scrolling", "image"],
   "ignore": [
     ".jshintrc",