Add README.md

README.md

@@ -0,0 +1,18 @@
+# Simple Callback Server
+A simple server that prints headers and body of a request to the console.
+
+## Usage
+```console
+$ npm install
+```
+
+```console
+$ npm run start
+```
+
+Then every incoming HTTP request will be logged with the following information:
+- HTTP Method
+- Called path
+- Headers
+- (if exists) Query parameter
+- (if exists) Body