Initial Python 3 compatible code

src/controller/buffers/__init__.py

@@ -4,4 +4,5 @@
   Currently, the package contains the following modules:
     * baseBuffers: Define a set of functions and structure to be expected in all buffers. New buffers should inherit its classes from one of the classes present here.
     * twitterBuffers: All other code, specific to Twitter.
-"""
+"""
+from __future__ import unicode_literals