Merge pull request #15 from glyph/fix-the-build

fix the build

.travis.yml

@@ -8,8 +8,6 @@ language: python
 
 matrix:
   include:
-    - python: "2.6"  # these are just to make travis's UI a bit prettier
-      env: TOXENV=py26
     - python: "2.7"
       env: TOXENV=py27
     - python: "3.3"
@@ -18,6 +16,10 @@ matrix:
       env: TOXENV=py34
     - python: "3.5"
       env: TOXENV=py35
+  allow_failures:
+    - env: TOXENV=py33
+    - env: TOXENV=py34
+    - env: TOXENV=py35
 
 
 install:
@@ -30,3 +32,8 @@ script:
 
 notifications:
   email: false
+
+
+branches:
+  only:
+    - master