Rename app to application.

Author: GrahamDumpleton

wsgi.py

@@ -1,9 +1,9 @@
 from flask import Flask
-app = Flask(__name__)
+application = Flask(__name__)
 
-@app.route("/")
+@application.route("/")
 def hello():
     return "Hello World!"
 
 if __name__ == "__main__":
-    app.run()
+    application.run()