Update README

README.md

@@ -1,10 +1,10 @@
-## PX4 Flight Core and PX4 Middleware ##
+## PX4 Pro Drone Autopilot ##
 
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-This repository contains the [PX4 Flight Core](http://px4.io), with the main applications located in the src/modules directory. It also contains the PX4 Drone Platform, which contains drivers and middleware to run drones.
+This repository holds the [PX4 Pro](http://px4.io) flight control solution for drones, with the main applications located in the src/modules directory. It also contains the PX4 Drone Middleware Platform, which provides drivers and middleware to run drones.
 
 *   Official Website: http://px4.io
 *   License: BSD 3-clause (see [LICENSE.md](https://github.com/PX4/Firmware/blob/master/LICENSE.md))