sort commits from github by timestamp, since they don't seem to alway…

…s provide them in order, and the last commit should be built last, given that its status is the project's status

app.rb

@@ -106,7 +106,7 @@
     payload = JSON.parse(params[:payload] || "")
 
     if Integrity.config[:build_all_commits]
-      payload['commits'].reverse.each do |commit|
+      payload['commits'].sort_by { |commit| Time.parse(commit['timestamp']) }.each do |commit|
         current_project.build(commit['id']) if payload['ref'] =~ /#{current_project.branch}/
       end
     else

spec/app_spec.rb

@@ -517,9 +517,9 @@ def payload
       status.should == 404
     end
 
-    it 'should make a new build for each commit' do
-      @project.should_receive(:build).with('41a212ee83ca127e3c8cf465891ab7216a705f59')
-      @project.should_receive(:build).with('de8251ff97ee194a289832576287d6f8ad74e3d0')
+    it 'should make a new build for each commit in ascending order of their dates' do
+      @project.should_receive(:build).with('de8251ff97ee194a289832576287d6f8ad74e3d0').ordered
+      @project.should_receive(:build).with('41a212ee83ca127e3c8cf465891ab7216a705f59').ordered
       post_it '/github/push', :payload => payload
     end