Update getting-started.md (#175)

Add __name__ == "__main__" clauses and a make_app function so that the app can be run with the CLI too.

docs/getting-started.md

@@ -8,8 +8,12 @@ Hello world app
 ```python
 from socketify import App
 
-app = App()
+def make_app(app: App):
     app.get("/", lambda res, req: res.end("Hello World socketify from Python!"))
+
+if __name__ == "__main__":
+    app = App()
+    make_app(app)
     app.listen(3000, lambda config: print("Listening on port http://localhost:%d now\n" % config.port))
     app.run()
 ```
@@ -19,8 +23,11 @@ SSL version sample
 ``` python
 from socketify import App, AppOptions
 
-app = App(AppOptions(key_file_name="./misc/key.pem", cert_file_name="./misc/cert.pem", passphrase="1234"))
+def make_app(app):
     app.get("/", lambda res, req: res.end("Hello World socketify from Python!"))
+
+if __name__ == "__main__":
+    app = App(AppOptions(key_file_name="./misc/key.pem", cert_file_name="./misc/cert.pem", passphrase="1234"))
     app.listen(3000, lambda config: print("Listening on port http://localhost:%d now\n" % config.port))
     app.run()
 ```
@@ -39,7 +46,7 @@ def ws_message(ws, message, opcode):
     #Ok is false if backpressure was built up, wait for drain
     ok = ws.send(message, opcode)
 
-app = App()    
+def make_app(app):    
     app.ws("/*", {
         'compression': CompressOptions.SHARED_COMPRESSOR,
         'max_payload_length': 16 * 1024 * 1024,
@@ -50,6 +57,11 @@ app.ws("/*", {
         'close': lambda ws, code, message: print('WebSocket closed')
     })
     app.any("/", lambda res,req: res.end("Nothing to see here!'"))
+
+
+if __name__ == "__main__":
+    app = App()
+    make_app(app)
     app.listen(3000, lambda config: print("Listening on port http://localhost:%d now\n" % (config.port)))
     app.run()
 ```