Added STI usage script
Fixed manual build.sh script to produce images with openshift/* prefix
Added nodejs010 runtime to support Rails applications
Moved Bash function into /opt/ruby/conf/sdk
Added gemrc to speed up installation of rubygems
Renamed /opt/ruby/conf to /opt/ruby/etc
Merge pull request #19 from mfojtik/centos-ruby-improvements

Various centos-ruby image improvements
Removed enablerepo option from yum command line
Merge pull request #20 from mfojtik/fix_yum

Removed enablerepo option from yum command line