Use 'flask run' instead of './app'.

README.md

@@ -27,8 +27,10 @@ Guide
 
 ### Test
 
-    ./app.py
-    # go to http://localhost:8080
+    export FLASK_APP=`pwd`/app.py
+    export FLASK_DEBUG=1
+    flask run
+    # go to http://localhost:5000
 
 ### Deploy
 

app.py

@@ -100,6 +100,3 @@ def set_style(style):
 def page_not_found(err):
     """Render and return the 404 error template."""
     return render_template("404.mako"), 404
-
-if __name__ == "__main__":
-    app.run(debug=True, port=8080)