add missing deps for coverage, fix coding style

Author: silvolu

.travis.yml

@@ -6,7 +6,11 @@ python:
 install:
   - pip install . unittest2
   - pip install coveralls
+  - pip install coverage
+  - pip install nosexcover
 # command to run tests with coverage
-script: nosetests --with-xunit --with-xcoverage --cover-package=gcloud --nocapture --cover-erase
+script:
+  - nosetests --with-xunit --with-xcoverage 
+      --cover-package=gcloud --nocapture --cover-erase
 after_success:
-  coveralls
+  coveralls