[MainActivity]Created addListenerOnButton

-Use addListenerOnButton method to link your button to your
respective activity. Example of use:
	addListenerOnButton(navigationButton, R.id.navigationButton,
NavigationActivity.class);

PS: Please first create your actvity to use this method ;)
Added navigationActivity

-navigationActivity added to master so other contributors can use as
an example of using the method addOnButtonListener
Added location permissions to the project