Travis: envs py{2,3}, flake8, pep257 and pytest

.travis.yml

@@ -1,12 +1,18 @@
-language: python
+---
+language: "python"
 python:
   - "2.7"
-  - "3.2"
-  - "3.3"
+  - "3.4"
+  - "3.5"
 
 install:
-  - python setup.py bdist --formats=zip
-  - sudo python setup.py install
+  - "pip install -U pip flake8 pep257"
+  - "python setup.py build"
+  - "python setup.py bdist --formats=zip"
+  - "sudo python setup.py install"
 
 script:
-  - python -m unittest discover
+  - "flake8 --ignore=E501 ./fido"
+  # pep257: fido.py is WIP
+  - 'pep257 --match="(?!fido).*\.py" ./fido'
+  - "python setup.py test"

setup.cfg

@@ -0,0 +1,2 @@
+[aliases]
+test=pytest

setup.py

@@ -27,16 +27,22 @@ def find_version(*file_paths):
 ]
 
 
-# Attempt automatic python2 to python3 conversion if using python3
-extra = {}
-if sys.version_info >= (3,):
-    extra['use_2to3'] = True
+setup_requires = [
+    'pytest-runner',
+]
+
+
+tests_require = [
+    'pytest',
+]
 
 
 setup(
     name='fido',
     version=find_version('fido', '__init__.py'),
     install_requires=install_requires,
+    setup_requires=setup_requires,
+    tests_require=tests_require,
     description='Format Identification for Digital Objects (FIDO)',
     packages=['fido'],
     package_data={'fido': ['*.*', 'conf/*.*']},