Adding coveralls integration

Run coverage with all tests and send results to coveralls.io.

Author: pferate

Diff for: .coveragerc

@@ -0,0 +1,7 @@
+[report]
+omit = */samples/*
+exclude_lines =
+    # Re-enable the standard pragma
+    pragma: NO COVER
+    # Ignore debug-only repr
+    def __repr__

Diff for: .gitignore

@@ -6,3 +6,8 @@ dist/
 
 # Test files
 .tox/
+
+# Coverage files
+.coverage
+coverage.xml
+nosetests.xml

Diff for: .travis.yml

@@ -10,7 +10,10 @@ env:
   - TOX_ENV=py34
 install:
 - pip install tox
+- pip install coveralls
 script:
 - tox -e $TOX_ENV
+after_success:
+  coveralls
 notifications:
   email: false

Diff for: tox.ini

@@ -9,5 +9,6 @@ deps = keyring
        django
        webtest
        nose
+       coverage>=3.6,<3.99
        unittest2
-commands = nosetests
+commands = nosetests --with-coverage --cover-package=googleapiclient --nocapture --cover-erase --cover-tests --cover-branches --cover-min-percentage=85