fixed readme formatting

README.md

@@ -23,6 +23,7 @@ continue to develop this fork (maybe some minor bug fixes and gui updates), but
 someone might find it useful.
 
 ##How to use:
+
 * Set up your hover button from the GUI. By default for PS3_Mode_1 its the L1 button of the PS3 controller.
 * When you press this button, it sets the target altitude as the current altitude. 
 * Hold the button to remain in hover mode.