Added package.json (for npm package management), build by Grunt.js and made openfb.js "browserify" friendly

[jhberges]

Got a bit messy, since I also included the grunt-release plugin to automate release.

However the upside is that users can do:

$ npm install git+https://git@github.com/ccoenraets/OpenFB.git --save

Then in (if using browserify), it's possible to do in code:

var openfb = require('open-fb');

openfb.init(params);

edit : first you (ofcourse) need npm installed (part of Node.js), then you do npm install -d to download grunt + dependencies.

To build (lint + "uglify"(minimize)):

$ grunt

To release:

$ grunt release

See https://github.com/geddski/grunt-release for options.

You might want to update the package.json file to reflect your own versioning and then do a "proper" release.

Cheers!