travis update

.travis.yml

@@ -7,7 +7,7 @@ env:
   - DJANGO="django>=1.8,<1.9"
 install:
   - pip install $DJANGO
-  - pip install PyOpenSSL>=0.15,<0.16
+  - pip install "PyOpenSSL>=0.15,<0.16"
   - pip install requests
   - python setup.py -q install
 script: python runtests.py

requirements.txt

 django>=1.7
 PyOpenSSL>=0.15,<0.16
-requests
\ No newline at end of file
+requests