Develop

## General Notice
- plugin now requires a minimum of Cordova version 3.5 for library automation [@mbektchiev]


## iOS
- login callback always used [@gordalina]

## Android
- remove title bar in login activity and made transparent [@josemedaglia]
- fixed cancel button share dialog error message
- fixed crashing when another plugin emit activity result [@Sneko]
- automated copy of Facebook SDK library project fix [@mbektchiev]
- native dialog for `shareDialog()` now used [@josemedaglia]

## JavaScript
- minor lint fixes [@ripcurlx]
- use `href` param for attaching links in share dialogs, inline with Facebook JS SDK API [@damrbaby]