removing asset-sync
removing asset sync gem
grunt task to upload to s3
saving the asset version into .env
updating Gemfile.lock since we removed asset_sync
just calling s3
Merge branch 'master' of https://github.com/rtgibbons/ruby-nodejs-test

* 'master' of https://github.com/rtgibbons/ruby-nodejs-test:
  empty commit for heroku
laoding NpmTask, calling s3:dev, and using JS string concatentation