Added controller and route for the demo

Created new controller LocationController which has only 1 function named 'get_location'. It gets the visitor's city and country_code, IP based according to the documentation, thats why running it locally will not work since the request is made from 127.0.0.1[localhost]. 

To access the new controller just type: 
http://www.youdomain.com/get_location 

Check the code to see how to access the geocoder functions.