Merge pull request #98 from FabianHinz/fix/swagger-documentation

Fix the swagger section of the README.md

README.md

@@ -174,7 +174,7 @@ Make sure that your `$GOPATH/bin` is in your `$PATH`.
    protoc -I/usr/local/include -I. \
      -I$GOPATH/src \
      -I$GOPATH/src/github.com/gengo/grpc-gateway/third_party/googleapis \
-     --grpc-swagger_out=logtostderr=true:. \
+     --swagger_out=logtostderr=true:. \
      path/to/your_service.proto
    ```