[license] adding apache license file
[plugin.xml] standardizing license + meta
[plugin.xml] adding android namespace
[CB-3453] Save original picture to photo library

- saves original picture when the following camera options are set for no edits (i.e. allowEdit is false, correctOrientation is false, targetWidth/targetHeight are not specified)
- this mirrors cordova-android behavior
- testing done with mobile-spec auto and manual tests
[CB-3482] Allow image metadata to be saved to album on iOS

-pass in metadata when saving to album using ALAssetsLibrary
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-plugin-camera