Merge pull request #42 from johnsonpham/master

update source for landingpage about bubbles and facebook button like
Merge pull request #43 from johnsonpham/master

fixed bug for button on mobile version
Merge pull request #44 from johnsonpham/master

fixing bug for background on mobile version
Remove .bowerrc
Merge pull request #28 from phuonghuynh/master

Update changes