Converted tabs to spaces

.travis.yml

@@ -7,6 +7,6 @@ install:
   - "pip install coveralls"
 # command to run tests
 script:
-	- py.test --cov=flaskbb --cov-report=term-missing tests
+  - py.test --cov=flaskbb --cov-report=term-missing tests
 after_success:
-	- coveralls
+  - coveralls