[#73271104] add 'alerts'
fix conflict in merge with master
fix conflict in merge with 73270988badges
update _variables.scss
Merge branch 'master' of github.com:gengo/style-guide into 73271104alerts
Merge branch 'master' of github.com:gengo/style-guide into 73271104alerts
add 2 css files in css/
- css/gengo-bootstrap-theme.css
- css/gengo.css
Merge pull request #45 from gengo/73271104alerts

[#73271104]  'alerts'