Go back home function

[sblum51]

Go back home function will show a navigation arrow in the direction of the start point and displaying the distance between the current location and the start point.This function can be use if the user is lost somewhere !

[sblum51]

Algorithm and arrow in SVG have been implemented in direction.html and algorithm.html. The last thing to do is the amelioration of the algorithm when the owner of the device is moving the phone.