Release for Ruby 1.9.3, 2.0.0, 2.2 and Ruby on Rails 3.2, 4.0, 4.1 on CentOS Linux 7 SCL

I am pleased to announce the immediate availability of Ruby in versions
1.9.3, 2.0.0, and 2.2, and Ruby on Rails in versions 3.2, 4.0 and 4.1 on
CentOS Linux 7 x86_64, delivered via a Software Collection (SCL) built
by the SCLo Special Interest Group
(https://wiki.centos.org/SpecialInterestGroup/SCLo).

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