updated readme and Makefile

.gitignore

@@ -1 +1,2 @@
 /cmd/gmeter/gmeter
+/bin

Makefile

@@ -9,4 +9,18 @@ test:
 install:
 	go install ./cmd/gmeter
 
+release:
+	GOOS=windows GOARCH=386 go build -o bin/gmeter-windows-i386-v$(version).exe cmd/gmeter/gmeter.go
+	GOOS=windows GOARCH=amd64 go build -o bin/gmeter-windows-amd64-v$(version).exe cmd/gmeter/gmeter.go
+	GOOS=linux GOARCH=386 go build -o bin/gmeter-linux-i386-v$(version) cmd/gmeter/gmeter.go
+	GOOS=linux GOARCH=amd64 go build -o bin/gmeter-linux-amd64-v$(version) cmd/gmeter/gmeter.go
+	GOOS=darwin GOARCH=amd64 go build -o bin/gmeter-darwin-amd64-v$(version) cmd/gmeter/gmeter.go
+
+	zip -m bin/gmeter-darwin-amd64-v$(version).zip bin/gmeter-darwin-amd64-v$(version)
+	zip -m bin/gmeter-windows-amd64-v$(version).zip bin/gmeter-windows-amd64-v$(version).exe
+	zip -m bin/gmeter-windows-i386-v$(version).zip bin/gmeter-windows-i386-v$(version).exe
+	gzip bin/gmeter-linux-i386-v$(version)
+	gzip bin/gmeter-linux-amd64-v$(version)
+
 all: lint test install
+

README.md

@@ -1,4 +1,78 @@
 # GMeter [![License](https://img.shields.io/badge/license-Apache%202.0-green.svg)](https://github.com/hexdigest/gmeter/blob/master/LICENSE) [![Build Status](https://travis-ci.org/hexdigest/gmeter.svg?branch=master)](https://travis-ci.org/hexdigest/gmeter) [![Coverage Status](https://coveralls.io/repos/github/hexdigest/gmeter/badge.svg?branch=master)](https://coveralls.io/github/hexdigest/gmeter?branch=master) [![Go Report Card](https://goreportcard.com/badge/github.com/hexdigest/gmeter)](https://goreportcard.com/report/github.com/hexdigest/gmeter) [![GoDoc](https://godoc.org/github.com/hexdigest/gmeter?status.svg)](http://godoc.org/github.com/hexdigest/gmeter)
 
-# gmeter
-A reverse proxy server that records and replays HTTP responses
+A simple reverse proxy server that records HTTP requests and replays HTTP responses.
+GMeter can be used for testing programs that make HTTP requests to third-party services.
+
+## Installation
+
+```
+go get github.com/hexdigest/gounit/cmd/gounit
+```
+
+Alternatively you can download one of the pre-built executables:
+
+[gmeter-windows-i386-v1.0.zip](https://github.com/hexdigest/gmeter/files/1778923/gmeter-windows-i386-v1.0.zip)
+[gmeter-windows-amd64-v1.0.zip](https://github.com/hexdigest/gmeter/files/1778924/gmeter-windows-amd64-v1.0.zip)
+[gmeter-linux-i386-v1.0.gz](https://github.com/hexdigest/gmeter/files/1778925/gmeter-linux-i386-v1.0.gz)
+[gmeter-linux-amd64-v1.0.gz](https://github.com/hexdigest/gmeter/files/1778926/gmeter-linux-amd64-v1.0.gz)
+[gmeter-darwin-amd64-v1.0.zip](https://github.com/hexdigest/gmeter/files/1778927/gmeter-darwin-amd64-v1.0.zip)
+
+## Usage
+
+```
+  -d string
+    	cassettes dir (default ".")
+  -h	display this help text and exit
+  -insecure
+    	skip HTTPs checks
+  -l string
+    	listen address (default "localhost:8080")
+  -t string
+    	target base URL
+```
+
+Start gmeter:
+
+```
+$ gmeter -t http://github.com 
+2018/03/05 00:06:19 started proxy localhost:8080 -> http://github.com
+```
+
+Put gmeter in recording mode:
+```
+$ curl -X POST http://localhost:8080/gmeter/record -d'{"cassette": "github_test"}'
+```
+
+Once you see something like:
+```
+2018/03/05 00:08:14 started recording of the cassette: github_test
+```
+
+Now you can start recording requests/responses. Lets request github index page:
+
+```
+$ curl http://localhost:8080/ -v
+*   Trying 127.0.0.1...
+* Connected to localhost (127.0.0.1) port 8080 (#0)
+> GET / HTTP/1.1
+> Host: localhost:8080
+> User-Agent: curl/7.47.0
+> Accept: */*
+> 
+< HTTP/1.1 301 Moved Permanently
+< Content-Length: 0
+< Location: https://github.com/
+< Date: Sun, 04 Mar 2018 21:11:25 GMT
+< Content-Type: text/plain; charset=utf-8
+< 
+* Connection #0 to host localhost left intact
+```
+
+Both request and response now recorded and present in the github_test.cassette file that can be replayed.
+In order to replay a cassette you have to put gmeter in play mode by making following request:
+
+```
+$ curl -X POST http://localhost:8080/gmeter/play -d'{"cassette": "github_test"}'
+```
+
+Now you can request github index page again and get a recorded response from the cassette.

tripper.go

@@ -35,7 +35,8 @@ type (
 	nopTripper struct{}
 )
 
-//RoundTrip implements http.RoundTripper
+//RoundTrip implements http.RoundTripper that always returns an error
+//it's used in Play mode so that responses can only be replayed but not recorded
 func (nt nopTripper) RoundTrip(r *http.Request) (*http.Response, error) {
 	b, err := httputil.DumpRequest(r, true)
 	if err != nil {