Update README.md

corrected reference to 'bootstrap-datepicker' project
Merge pull request #231 from janhoffmann/patch-1

Update README.md
Country code fixed

Country code fixed
Merge pull request #234 from renekorss/master

Country code fixed
Add return value of called methods
Merge pull request #235 from oziade/master

Add return value of called methods
Fixed zh-CN locale
Merge pull request #236 from fy0/master

Fixed zh-CN locale
Merge pull request #1 from smalot/master

update master