Added Unwrap method to Request so as to allow consistency with the Response (#12)

Author: adelowo

request.go

@@ -182,6 +182,11 @@ func (r *Request) FormFile(key string) (multipart.File, *multipart.FileHeader, e
 	return r.Params.FormFile(key)
 }
 
+//Unwrap returns the underlying http.Request
+func (r *Request) Unwrap() *http.Request {
+	return r.Raw
+}
+
 // Reset method resets request instance for reuse.
 func (r *Request) Reset() {
 	r.Scheme = ""

request_test.go

@@ -60,6 +60,7 @@ func TestHTTPParseRequest(t *testing.T) {
 
 	aahReq := ParseRequest(req, &Request{})
 
+	assert.Equal(t, req, aahReq.Unwrap())
 	assert.Equal(t, "127.0.0.1:8080", aahReq.Host)
 	assert.Equal(t, MethodGet, aahReq.Method)
 	assert.Equal(t, "/welcome1.html", aahReq.Path)