Update Directive - Pane
Update Directive - Screen. A workaround for transclude scope.
New Directive - screenHeader

* Use screenHeader instead of screenNavigation
* If template of a directive is simple, use template instead of templateUrl
Update Styles
Add Directive - EditField.
Merge pull request #2 from iissnan/master

Update Directives.
Merge pull request #4 from joahCN/master

Merge pull request #2 from jsjv/master
Update Service - navigator$
Merge pull request #5 from iissnan/master

Update Service - navigator$
Merge pull request #3 from jsjv/master

update