Improved package tests and updated promise req to 2.0.dev

Author: syrusakbary

.travis.yml

@@ -21,10 +21,7 @@ before_install:
     source "$HOME/virtualenvs/pypy-$PYPY_VERSION/bin/activate"
   fi
 install:
-- pip install pytest-cov pytest-mock coveralls flake8 gevent==1.1b5 six>=1.10.0 promise>=0.4.2
-  pytest-benchmark
-- pip install pytest==2.9.2
-- pip install -e .
+- pip install -e .[test]
 script:
 - py.test --cov=graphql graphql tests
 after_success:

setup.py

@@ -20,13 +20,14 @@
 
 install_requires = [
     'six>=1.10.0',
-    'promise>=0.4.2'
+    'promise>=2.0.dev'
 ]
 
 tests_requires = [
     'pytest==3.0.2',
     'pytest-django==2.9.1',
     'pytest-cov==2.3.1',
+    'coveralls',
     'gevent==1.1rc1',
     'six>=1.10.0',
     'pytest-benchmark==3.0.0',