added dependencies for go vet

.travis.yml

@@ -3,6 +3,12 @@ language: go
 go:
   - 1.3
 
+
+before_script:
+  - sudo apt-get install -y libjna-java python-pip
+  - sudo pip install cql PyYAML six
+  - go get code.google.com/p/go.tools/cmd/vet
+
 script:
   - go vet .