Initial commit

Signed-off-by: Carl Pearson <me@carlpearson.net>

README.md

@@ -0,0 +1,46 @@
+# echo-ratelimit
+
+Small in-memory rate-limiting middleware for [Echo](https://github.com/labstack/echo), keyed by client IP.
+
+## Install
+
+```bash
+go get github.com/labstack/echo/v4
+```
+
+## Usage
+
+```go
+package main
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/labstack/echo/v4"
+
+	ratelimit "git.carlpearson.net/cwpearson/echo-ratelimit"
+)
+
+func main() {
+	e := echo.New()
+	e.Use(ratelimit.Middleware(60, time.Minute))
+
+	e.GET("/", func(c echo.Context) error {
+		return c.String(http.StatusOK, "ok")
+	})
+
+	e.Logger.Fatal(e.Start(":8080"))
+}
+```
+
+## Custom Configuration
+
+```go
+e.Use(ratelimit.WithConfig(ratelimit.Config{
+	Limit:      10,
+	Window:     time.Minute,
+}))
+```
+
+Rate-limit headers are emitted by default.