enable python 3.4 on travis

.travis.yml

@@ -1,9 +1,9 @@
 sudo: false
 language: python
 python:
-  - "3.2"
+#  - "3.2"
 #  - "3.3"
-#  - "3.4"
+  - "3.4"
 
 addons:
   postgresql: "9.3"