Merge / Clean Up / Rewrite the js libraries. Fix #67 (+4 squashed commits)

Squashed commits:
[bce9854] Clean up and merge js files into one
[378481c] Remove jquery.emoji.js from lib. Merge the code into hello-emoji.js
[b4f28d1] Generate minified hello-emoji.js
Add conditional loading when enqueue scripts
Merge pull request #91 from yoren/redundant-js-fix

Merge / Clean Up / Rewrite the js libraries. Fix #67
Merge branch 'develop' of github.com:WPCollab/hello-emoji into develop