fix testing script.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.gitignore

@@ -30,3 +30,4 @@ bin/*
 .DS_Store
 *.cert
 *.key
+coverage.out

.travis.yml

@@ -19,6 +19,6 @@ install:
   - go get github.com/mattn/goveralls
 
 script:
-  - go test -v -covermode=count -coverprofile=coverage.out
-  - $(go env GOPATH | awk 'BEGIN{FS=":"} {print $1}')/bin/goveralls -coverprofile=coverage.out
+  - cd gopush && go test -v -covermode=count -coverprofile=coverage.out
+  - $(go env GOPATH | awk 'BEGIN{FS=":"} {print $1}')/bin/goveralls -coverprofile=gopush/coverage.out
     -service=travis-ci -repotoken=$COVERALLS_TOKEN