don't support py2.6

.travis.yml

@@ -1,6 +1,5 @@
 language: python
 python:
-  - "2.6"
   - "2.7"
   - "3.2"
   - "3.3"

setup.py

@@ -24,8 +24,8 @@ with open(path.join(HERE, 'README.rst'), encoding='utf-8') as f:
 
 # http://stackoverflow.com/a/19719657/1062499
 INSTALL_REQUIRES = []
-if sys.version_info[0] == 2:
-    INSTALL_REQUIRES.append('future')
+if sys.version_info.major == 2:
+    INSTALL_REQUIRES.append('future >= 0.14')
 
 setup(
     name='pytimeparse',