Merge branch 'hotfix/1.22.7'
add rubygems 2.1.1 md5
switch ruby 2.0.0 and head to rubygems 2.1+
fix quoting of shell initialization file names in installer when checking if rvm is sourced, fix #2205
add rubygems-2.1.2 md5
switch rubies to newer rubygems
1.22.8
Merge branch 'master' into hotfix/1.22.8
Merge branch 'hotfix/1.22.8' into stable