[Bug 1309525] New: Bump up Elixir version

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1309525

Bug ID: 1309525
           Summary: Bump up Elixir version
           Product: Fedora EPEL
           Version: epel7
         Component: elixir
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail]

Current EPEL package for Elixir is using version 0.12 [1]
This is quite behind, 
Effectively latest stable version of Elixir is 1.2.2 [2]

Dependent projects like Phoenix depends on more recent version of Elixir.
Elixir is a relatively young language which is moving fast.

[1] http://dl.fedoraproject.org/pub/epel/7/x86_64/repoview/elixir.html
[2]
dl.fedoraproject.org/pub/fedora/linux/development/rawhide/x86_64/os/Packages/e/elixir-1.2.2-1.fc24.noarch.rpm