Doxygen comments added

Dependencies:   mbed Gamepad N5110

Revision:
0:43364ffd7cf6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Gamepad.lib	Mon Mar 25 13:28:14 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/eencae/code/Gamepad/#c0959710291b