Android input language adding phonetic variation

I'm looking to add a Russian Phonetic keyboard layout to the default list of input layouts in Jellybean 4.2.2. Going into Settings->Language & Input->Keyboard & Input Methods/Android Keyboard->Input Languages On that menu I see Russian, but it is the standard Russian keyboard which doesn't have Russian letters mapped to the English QWERTY layout. There apps that do this but I lose the gesture typing capabilities for example. I was hoping there was a way of adding a Russian (Phonetic) layout to the list by somehow modifying the standard Russian layout and readding it as a phonetic variation.