Simplify travis script, delete requirements.txt

Author: multimeric

.travis.yml

@@ -5,13 +5,8 @@ python:
   - '3.5'
   - '3.6'
   - 'pypy3'
-install:
-  - pip install -r requirements.txt
-  - pip install coveralls coverage
-  - pip install -U setuptools
-  - pip install pytest --upgrade
 script:
-  - python setup.py install
+  - pip install .
   - coverage run --source flask_rest_jsonapi -m pytest -v
 after_success:
   - coveralls

requirements.txt

@@ -32,5 +32,12 @@
     ],
     setup_requires=['pytest-runner'],
     tests_require=['pytest'],
-    extras_require={'tests': 'pytest', 'docs': 'sphinx'}
+    extras_require={
+        'tests': [
+        'pytest',
+        'coveralls',
+        'coverage'
+        ],
+        'docs': 'sphinx'
+    }
 )