moving coverage and coveralls packages to tox

.travis.yml

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

tox.ini

@@ -3,7 +3,7 @@ minversion = 1.3
 envlist = py26,py27,docs,flake8
 
 [testenv]
-deps=nose
+deps=nose coveralls coverage
 commands=nosetests --with-coverage --cover-package=wstools
 
 [testenv:py26]