Test Python 3.6 on Travis

.travis.yml

@@ -2,6 +2,7 @@ language: python
 
 python:
   - "2.7"
+  - "3.6"
 
 install:
   - "pip install ."

README.md

@@ -101,7 +101,7 @@ It's one of those tools where, the more you use it, the more you think of places
 Dependencies
 ------------
 
-* python2
+* Python 2.7 or Python 3.6+
 
 Credits
 -------

codemod/terminal_helper.py

@@ -12,6 +12,9 @@
 import termios
 import struct
 
+if sys.version_info[0] >= 3:
+    unicode = str
+
 
 def terminal_get_size(default_size=(25, 80)):
     """