Added additonal information for installation and usage to make setup …

README.md

@@ -22,7 +22,8 @@ That's what grpc-gateway helps you to do. You just need to implement your gRPC s
 Then the reverse-proxy generated by grpc-gateway serves RESTful API on top of the gRPC service.
 
 ## Installation
-First you need to install ProtocolBuffers 3.0.0-beta-3 or later.
+First you need to install [golang](https://golang.org/dl) and ProtocolBuffers 3.0.0-beta-3 or later for your platform.
+For ProtocolBuffers either download a pre-built [binary](https://github.com/google/protobuf/releases) for your platform or build it from source.
 
 ```sh
 mkdir tmp
@@ -35,6 +36,8 @@ make
 make check
 sudo make install
 ```
+If you are using cygwin and ProtocolBuffers 3.0.0-beta-3 or later is not available for cygwin yet install the Windows version.
+Make sure that `protoc.exe` is in your `$PATH` and copy the `include` directory from the windows binary into cygwin's `/usr/local/include` directory.
 
 Then, `go get -u` as usual the following packages:
 
@@ -93,7 +96,12 @@ Make sure that your `$GOPATH/bin` is in your `$PATH`.
      --go_out=plugins=grpc:. \
      path/to/your_service.proto
    ```
-
+   If you are a using cygwin replace the first line in the following commands to provide the correct path to the include directory to `protoc`.
+   ```diff
+   -protoc -I/usr/local/include -I. \
+   +protoc -I$(cygpath -w /usr/local/include) -I. \
+   ```
+
    It will generate a stub file `path/to/your_service.pb.go`.
 4. Implement your service in gRPC as usual
    1. (Optional) Generate gRPC stub in the language you want.
@@ -128,7 +136,7 @@ Make sure that your `$GOPATH/bin` is in your `$PATH`.
 
    It will generate a reverse proxy `path/to/your_service.pb.gw.go`.
 
-   Note: After generating the code for each of the stubs, in order to build the code, you will want to run ```go get .``` from the directory containing the stubs.
+   Note: After generating the code for each of the stubs, in order to build the code, you will want to move the stubs into your `$GOPATH/src` working directory and run ```go get .``` from the directory containing the stubs.
 
 6. Write an entrypoint
 
@@ -186,6 +194,12 @@ Make sure that your `$GOPATH/bin` is in your `$PATH`.
      --swagger_out=logtostderr=true:. \
      path/to/your_service.proto
    ```
+8. Generate executable
+
+   Run this inside the directory containg your `main.go`.
+   ```
+   go build
+   ```
 
 ## Parameters and flags
 `protoc-gen-grpc-gateway` supports custom mapping from Protobuf `import` to Golang import path.