Add runtime.txt file. Change version of Twython to 3.2.

Author: Soheil

README.md

@@ -31,4 +31,4 @@ For adding a smart handler, create a python package in `smart_handlers` with nam
 Before submitting a pull request, test your feature. You can do it by running `test.py` and simulating the timeline.
 
 ## Requirements
-You need `Python 3.4` or later and `twython 3.0` to run the code.
+You need `Python 3.4` or later and `twython 3.2` to run the code.

requirements.txt

@@ -1 +1 @@
-twython==3.0.0
+twython==3.2.0

runtime.txt

@@ -0,0 +1 @@
+python-3.4.1