Merge pull request #1 from asafdav/master

Update with asafdav's current version
Stick content to bottom option
Code consistency
Updated karma-requirejs version to be compatible with other dependencies.
OffsetTop value of the parent element took into consideration when positioning scrollbar.
Merge branch 'reverse' of https://github.com/evojam/ng-scrollbar into pull_requests

Conflicts:
	src/ng-scrollbar.js
Merge branch 'reverse' of https://github.com/evojam/ng-scrollbar into pull_requests

Conflicts:
	src/ng-scrollbar.js
Merge branch 'pull_requests'