Hard coded development URL

[nmeirik]

This should probably be fixed. ;)

https://github.com/Oyatel/oyatel-api-examples/blob/master/javascript/index.html#L253

[grEvenX]

Thanks for the comment, you are right, it should probably be fixed.
The code is just example code though, so it's won't be working straight out of the box on everything, but I agree that it should be the goal (or at least have some instructions on how to work with the example code).