Add rubocop
Exclude schema.rb from rubocop checks
Silence rubocop long line warnings
Silence documentation cop
Remove extra blank lines
Add travis config
Merge remote-tracking branch 'remotes/jsyeo/jsyeo-add-rubocop'
Merge remote-tracking branch 'remotes/jsyeo/jsyeo-add-travis'
@jsyeo and I decided that this set of cops would probably be good.
Updated README, with Travis build badge.
Fixing lints generated by Rubocop.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Gemfile
Use official bootstrap-sass gem instead of raw bootstrap stylesheets files.
delete inline stylesheet in application.html.erb
 make veryclean static_pages.css.scss
did some refinement to css files
Using sub path to do localization
re-implement dropdown menu to change locale