Adds tox tests to travis

.travis.yml

@@ -1,3 +1,4 @@
+sudo: false
 language: python
 python:
     - '2.7'
@@ -10,3 +11,15 @@ script:
     - 'python -m pycco.main pycco/main.py'
 after_success:
     - coveralls
+matrix:
+  include:
+    - python: 3.5
+      env: CODESTYLE=true
+    - python: 2.7
+      env: TOXENV=py27
+      install: pip install tox
+      script: tox
+    - python: 3.6
+      env: TOXENV=py36
+      install: pip install tox
+      script: tox

pycco/main.py

@@ -535,6 +535,7 @@ def next_file():
             with open(path.join(outdir, "index.html"), "wb") as f:
                 f.write(generate_index.generate_index(generated_files, outdir))
 
+
 __all__ = ("process", "generate_documentation")
 
 
@@ -630,6 +631,7 @@ def main():
 
         monitor(sources, opts)
 
+
 # Run the script.
 if __name__ == "__main__":
     main()

tox.ini

@@ -1,11 +1,11 @@
 [tox]
-envlist = py2,py3,codestyle
+envlist = py27,py36,codestyle
 
 [testenv]
 deps = -rrequirements.test.txt
-commands = py.test
+commands = pytest
 
 [testenv:codestyle]
 deps = pycodestyle
 # E501 - line too long
-commands = pycodestyle --ignore=E501
+commands = pycodestyle --ignore=E501 pycco