[CB-3398] Doc iOS camera photo album vs returned image differences
[CB-2535] Document media.setVolume

- Document media.setVolume in API docs.  This is existing functionality.
[CB-3408] Add docs for new InAppBrowser options (iOS/Android)
[BlackBerry10] Add instructions on building native plugin using the native IDE
[BlackBerry10] Update plugin add/remove in getting started guide