Update README.md
add/remove swipe event of Android

Remove some swipe event in the Android version to make the tableview/listview scroll smoother
Update widget.js
Merge pull request #23 from wiltonkkw/master

remove unnecessary swipe event listener in Android
Fixes #24

Making clear how it works on Android.
resolves hiding issue on 3.3
Merge pull request #28 from jasonkneen/master

resolves hiding issue on 3.3
Update README.md