add support for coveralls

.coveragerc

@@ -0,0 +1,5 @@
+[report]
+omit =
+    */python?.?/*
+    */site-packages/nose/*
+

.coveralls.yml

@@ -0,0 +1,2 @@
+repo_token: 5AkyFNIcadJWZQU8iA6f9GPtJs2xP8V6C
+

.travis.yml

@@ -5,7 +5,7 @@ env:
   - TOX_ENV=docs
   - TOX_ENV=flake8
 install:
-  - pip install tox
+  - pip install tox coveralls
 script: 
   - tox -e $TOX_ENV
 

tox.ini

@@ -4,7 +4,7 @@ envlist = py26,py27,docs,flake8
 
 [testenv]
 deps=nose
-commands=nosetests
+commands=nosetests --with-coverage --cover-package=wstools
 
 [testenv:py26]