Merge pull request #245 from argelius/v1.1.x

Fixes issue where checkboxes and radiobuttons couldn't be toggled in iOS
Added doccomments for slidingMenu.setSwipable().
Merge branch 'v1.1.x' of https://github.com/OnsenUI/OnsenUI into v1.1.x
Trivial fix.
Correctly bind model changes. This fixes #252.