Ch4 : creating commands and handlers
Ch4 : GOOD creating commands and handlers.
There was error in MASTER-branch. Try Fix it in this commit.
Ch4 : binding commands to keys
Fix errors in MASTER by merging branch 'CH4_NOERROR'

Conflicts:
	com.packtpub.e4.clock.ui/plugin.xml
	com.packtpub.e4.clock.ui/src/com/packtpub/e4/clock/ui/handlers/HelloHandler.java