Adding test for prepare_url, also added code of conduct and issue template (#256)
Adding test for prepare_url, also added code of conduct and issue template (#256)

* Adding test for prepare_url, also added code of conduct and issue template files

* Removing Code of Conduct and Issue Template in order to add to different branch

* Removing unused imports

opsdroid/opsdroid-audio,opsdroid/opsdroid-audio