Added coverage and coveralls in travis conf

Author: tdruez

.travis.yml

@@ -2,5 +2,11 @@ language: python
 python:
   - "2.6"
   - "2.7"
-install: "pip install -r requirements.txt --use-mirrors"
-script: python setup.py test
+install:
+    - "pip install -r requirements.txt --use-mirrors"
+    - "pip install coverage"
+    - "pip install coveralls"
+script:
+    - "coverage run --source=about_code_tool setup.py test"
+after_success:
+    coveralls