Merge pull request #8 from crowbar/master

pull last changes
Merge pull request #9 from crowbar/master

pull last changes
fix to create barclamp
Merge pull request #1895 from MirantisDellCrowbar/unstable/pebbles/master

fix to create barclamp by command /opt/dell/bin/barclamp_create.rb
Install rubygem-app_config in --from-git mode

It's required by the crowbar barclamp
Merge pull request #1896 from rhafer/master

Install rubygem-app_config in --from-git mode
Fix up misnamed release mesa-1.6.1