D3 Visualization Dots

## Added grunt workflow
1. Use node to install grunt and its dependencies <br />
    `npm install`
2. then run grunt to build all sources and merge libraries <br />
    `grunt`

## To Run
1. use python virtualenv<br />
  `workon tork`
2. start server<br />
  `python manage.py runserver`
3. enable grunt watch in another console<br />
  `grunt watch`
4. Work inside tork/src/ directory and all changes will be auto built for site

## New Directory structure
- tork/
- dest/ -- built code directory
- src/ -- source directory
  - js/ - source java files will be merged with uglify
  - partials/ - angular partial views for different pages
  - stylus/ - css scripts to be compiled using [stylus](http://learnboost.github.io/stylus/)
  - media/ - image resource directory