Fix travis (#79)

Fix breakage (and deadsnakes) hack for travis ci.

.travis.yml

@@ -1,19 +1,19 @@
 language: python
-python:
-    - "3.6"
-addons:
-  apt:
-    sources:
-      - deadsnakes
-    packages:
-      - python3.5 python3.5-dev
+matrix:
+  include:
+    - python: 3.6
+      env: TOXENV=py
+    - python: 3.5
+      env: TOXENV=py
+    - python: 3.4
+      env: TOXENV=py
+    - python: 3.3
+      env: TOXENV=py
+    - python: 2.7
+      env: TOXENV=py
+    - python: pypy
+      env: TOXENV=py
 sudo: false
-env:
-    - TOXENV=py27
-    - TOXENV=py33
-    - TOXENV=py34
-    - TOXENV=py35
-    - TOXENV=py36
 install:
     - pip install -U pip
     - pip install -U tox coverage coveralls

README.md

@@ -34,9 +34,9 @@ We are on irc! You can come chat with us in the ```#flask-jwt-extended``` channe
 
 
 ### Testing and Code Coverage
-We require 100% code coverage in our unit tests. We run all the unit tests with tox,
-which will test against python2.7, 3.3, 3.4, 3.5 and 3.6. Running tox will print out a
-code coverage report
+We require 100% code coverage in our unit tests. You can run the tests locally
+with `tox` which will print out a code coverage report. Creating a pull request
+will run the tests against python 2.7, 3.3, 3,4, 3,5, 3,6, and PyPy.
 ```
 $ tox
 ```