Hotfix for building from branch.

VERSION

-master
+buildfrombranch:docker-registry

lib/gitlab/version.rb

@@ -13,6 +13,8 @@ module Gitlab
     def print
       if @read_version.include?('.pre') || @read_version == "master"
         "master"
+      elsif @read_version.start_with?('buildfrombranch:')
+        @read_version.gsub(/^buildfrombranch:/,'')
       elsif @read_version.empty?
         nil
       else