modify travis so it will install golint and govet

* before running tests

.travis.yml

@@ -9,4 +9,5 @@ install:
   - sudo pip install -r expandybird/requirements.txt
 
 script:
+  - make setup-gotools
   - make test

Makefile

@@ -34,6 +34,10 @@ clean:
 test: build
 	go test -v $(GO_DEPS)
 
+.PHONY: setup-gotools
+setup-gotools:
+	$(SETUP_GOTOOLS)
+
 push: container
 
 container: .project .docker