simpified ron frameworks and correct some fixes

added example
still learning how to works http package

ron.go

@@ -0,0 +1,56 @@
+package ron
+
+import (
+	"context"
+	"net/http"
+)
+
+type Context struct {
+	C context.Context
+	W http.ResponseWriter
+	R *http.Request
+	E *Engine
+}
+
+type Engine struct {
+	mux *http.ServeMux
+}
+
+func New() *Engine {
+	engine := &Engine{
+		mux: http.NewServeMux(),
+	}
+	return engine
+}
+
+func (engine *Engine) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	engine.handleRequest(w, r)
+}
+
+func (engine *Engine) Run(addr string) error {
+	return http.ListenAndServe(addr, engine)
+}
+
+func (engine *Engine) handleRequest(w http.ResponseWriter, r *http.Request) {
+	engine.mux.ServeHTTP(w, r)
+}
+
+func (engine *Engine) GET(path string, handler func(*Context)) {
+	engine.mux.HandleFunc(path, func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodGet {
+			http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
+			return
+		}
+		handler(&Context{W: w, R: r, E: engine})
+	})
+}
+
+func (engine *Engine) POST(path string, handler func(*Context)) {
+	engine.mux.HandleFunc(path, func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
+			return
+		}
+		handler(&Context{W: w, R: r, E: engine})
+	})
+}