解决方法
使用：
https://github.com/driftyco/ionic-plugins-keyboard
有：
- window.addEventListener 'native.keyboardshow',(e) ->
- cur_height = $('body').height()
- $('body').height cur_height - e.keyboardHeight
- window.addEventListener 'native.keyboardhide',(e) ->
- $('body').height '100%'
