Add go get for testify when travis building

Author: johnteee

.travis.yml

@@ -8,9 +8,7 @@ go:
   - master
 
 install:
-  - go get -v github.com/Masterminds/glide
-  - cd $GOPATH/src/github.com/Masterminds/glide && git checkout tags/0.10.2 && go install && cd -
-  - glide install
+  - go get -v github.com/stretchr/testify
 
 matrix:
   fast_finish: true