Decimals into opacity mixin
Update links in docs
Rounded corners in navbar dropdown
Remove Checkbox Hover, Escape Less Relative Path

- less/modules/checkbox-and-radio.less:
  Remove hover state for checkbox icons for iOS usability
  Change a couple tabs to 2-spaces
- Other less changes:
  Escape all relative paths so that lessc compiles with correct relative path

Fixes Issue #70 (possibly) and issue #76
Fixed code sample for btn-inverse
Merge pull request #78 from rmm5t/patch-1

Fixed code sample for btn-inverse
Merge pull request #77 from thcipriani/bug/ios-checkbox-usability

Remove Checkbox Hover, Escape Less Relative Path
invalid markup in documentation (navbar)
select menulist appearance
issues#81
Merge pull request #82 from supercaracal/master

issues#81
Merge branch 'master' into gh-pages
update typography, buttons, mixins and fix some navbar issues
readme update
Merge branch '2.1.1-wip'
Merge branch 'master' into gh-pages