Merge pull request #3 from designeer/develop

Develop
Merge remote-tracking branch 'origin/develop'

* origin/develop:
  -Fixing a small tab selection related bug
  -Copy changes on landing page
  -Updated the quiz section with a feedback regarding right or wrong
  -Removed the b word from placeholder text -Adding proper theme background and text color.
  -Adding environment handling based on the URL(Could be done better).
  -Added CNAME copying instruction to Gruntfile -Moved CNAME to proper location
  -Adding CNAME to the repo
  -Removing the text "try to" on Jesse's request
-Added missing polymer includes
-Added infinitely generating quiz
-Fixed the bug where ALL the quizzes will show the same word, even though they were never created from that seed word
- Added a new directive called ds-paper-shadow for paper-shadow effect