Extracted requirements for development from travis.yml to dev_requirements.txt

Author: ekampf

.travis.yml

@@ -7,7 +7,7 @@ python:
 - 3.5
 cache: pip
 install:
-- pip install pytest pytest-cov coveralls flake8
+- pip install -r ./dev_requirements.txt
 - pip install -e .
 script:
 - flake8 gql

dev_requirements.txt

@@ -0,0 +1,5 @@
+pytest
+pytest-cov
+coveralls
+flake8
+mock

setup.py

@@ -29,5 +29,5 @@
         'graphql-core>=0.5.0',
         'promise>=0.4.0'
     ],
-    tests_require=['pytest>=2.7.2'],
+    tests_require=['pytest>=2.7.2', 'mock'],
 )