FlashFire is the app by ChainFire that allows you to flash roms, wipe data, make backups all straight from your device without having to boot into recovery. This is kind of the younger brother of Mobile ODIN except it is way more versatile.
FlashFire has been updated to v0.26. With the update the app now supports Marshmallow Android 6.0. It also does OTA files which means you can now flash your OTA files using flashfire on Nexus devices that are already rooted and maintain root. Normally if you want to receive an ota update you would need to first bring your phone back to stock before grabbing the over the air update. To grab the new version of flashfire head to the link below.
via +Chinfire