GF-40203: Add key mapping feature to dispatcher.
DCO-1.1-Signed-Off-By: Kevin Schaaf <kevin.schaaf@lge.com>
Merge pull request #552 from enyojs/GF-40203-kevinpschaaf

GF-40203: Add key mapping feature to dispatcher.

Reviewed-By: Ben Combee (ben.combee@lge.com)