(cherry picked from commit cb556e4)

Invoke response callbacks after UIImagePickerController dismiss animation has completed

- crop directly from library/camera intent instead of using "com.android.camera.action.CROP" sin...

- upgrade react-native compilation to 0.20.+
- set version name from package.json
- manage onAct...

doc: http://stackoverflow.com/a/24418124

fix #117

Android: Add null checks for options

Checking nulls for options: takePhotoButtonTitle and
chooseFromLibraryButtonTitle

Fix iOS7 crash

containsString is an iOS8+ method and as such crashes on iOS7. Using
rangeOfString fixes that.

[Android] add options of image crop: aspectX & aspectY

Fix iOS bugs with skipBackup and moving video files to the Documents folder.

Resize tweaks

make sure the path still points to the right file

[Android] Handle case where we can't extract the image path and url path in Android (v2)

[Android] Tweak activity not found handler

apparently even though the activity doesn't exist, the activity
result might still run on anothe...

[Android] handle ActivityNotFoundException

this way consumers can still try to render if they want

when starting intents to get a photo from the camera or photo
album

now that we're copying whatever is on the url to a file it should
always work (or fail in the ex...

avoid issue getting a path for some image urls returned by the
intent on Android 4.4+ - just cre...

apps (like Giphy) can save animated gifs to the camera roll, but
attempting to resize gifs in th...

###enhancements
- match iOS breaking point (didCancel, response) into (response)
- put android u...