Merge pull request #9 from thomasalrin/master

Megam packages polishing #6 #7 #8
Merge pull request #10 from thomasalrin/master

postinst for megam private gems installation
change herk.log to megamd.log
Merge pull request #11 from indykish/master

change herk.log to megamd.log
gem install without rdoc and ri