Travis build update (#122)

* use python3.5 for qa check
* display test skip reasons
* mock installation only required on python < 3.3
* upgrade setuptools on travis
* Override already installed setuptools

.travis.yml

@@ -14,10 +14,12 @@ matrix:
           env: TOXENV=py36
         - python: 3.7-dev
           env: TOXENV=py37
-        - python: 2.7
+        - python: 3.5
           env: TOXENV=qa
 
-install: pip install -U pip tox coveralls
+install:
+ - pip install --upgrade --ignore-installed setuptools
+ - pip install --upgrade pip tox coveralls
 script: tox -vv
 after_success:
   - coveralls

setup.py

@@ -20,7 +20,7 @@ def read_file(fname):
 CHANGES = read_file("CHANGES.rst")
 version = read_file("VERSION.txt").strip()
 test_deps = [
-    "mock",
+    'mock;python_version<"3.3"',
     "pytest>=3.1",
     "pytest-cov"
 ]

tox.ini

@@ -8,14 +8,14 @@ skip_missing_interpreters = True
 [testenv]
 commands =
     python setup.py install
-    coverage run -m py.test -v -r w
+    coverage run -m py.test -v -r wsx
     coverage report
 deps =
     .[test]
 
 [testenv:qa]
 commands =
     flake8
-    rstcheck README.rst
+    rstcheck README.rst CHANGES.rst CONTRIBUTING.rst
 deps =
     .[qa]