improved error message

Indicate to user whether kind in undefined or unknown. This may not bring new
information to Enyo masters, but it sure helps newbie like me...
Merge pull request #220 from enyojs/improved_error_msg

improved error message

Reviewed-By: Ben Combee (ben.combee@palm.com)
Cleaning up comments for initComponents(). Enyo-DCO-1.1-Signed-off-by: Jim Tang <jim.tang@palm.com>