Set new Melange version number to 2-1-20150129 in app.yaml.template

Change-Id: If7e838e3651070064fc76c75a0593cd463b1a719
diff --git a/app/app.yaml.template b/app/app.yaml.template
index a4d835f..eb5d937 100644
--- a/app/app.yaml.template
+++ b/app/app.yaml.template
@@ -15,7 +15,7 @@
 # TODO(proto): uncomment and supply a Google App Engine application instance
 # application: FIXME
 # TODO(release): see the instructions in README about the "version:" field
-version: 2-1-20150126
+version: 2-1-20150129
 runtime: python27
 api_version: 1
 threadsafe: false