adding extremely minimal example

examples/minimalexample/app.py

@@ -0,0 +1,9 @@
+from flask import Flask
+
+app = Flask(__name__)
+
+@app.route("/", methods=["GET", "POST"])
+def index():
+    return "Hello world!"
+
+app.run(debug=True)

examples/minimalexample/app.py~

@@ -0,0 +1,9 @@
+from flask import Flask
+
+app = Flask()
+
+@app.route("/", methods=["GET", "POST"])
+def index():
+    return "Hello world!"
+
+app.run(debug=True)