Prepping v0.4.0

Merge branch 'develop'

* develop:
  Use values from pkg in index.html
  Valid resulting package.json
  Add allow-remote option on grunt serve
  Tidy up readme
  Update inuitcss to pre-alpha version!
  Remove 0.8 node testing
  Remove IE conditional comments, add IE=edge meta tag
Release v0.4.0
Better badge service for npm version