Fix bug when changes to post-receive worker was not dumped properly

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

CHANGELOG

+v2.0.1
+  - Send post-receive changes to redis as a string instead of array 
+
 v2.0.0
   - Works with GitLab v7.3+
   - Replace raise with abort when checking path to prevent path exposure

VERSION

-2.0.0
+2.0.1

lib/gitlab_post_receive.rb

@@ -7,7 +7,7 @@ class GitlabPostReceive
   def initialize(repo_path, actor, changes)
     @config = GitlabConfig.new
     @repo_path, @actor = repo_path.strip, actor
-    @changes = changes.lines
+    @changes = changes
   end
 
   def exec