Switched license to Apache 2.0

Prior to this commit, code was available under the Mozilla Public License 2.0 (MPL-2.0). While such license cannot be revoked, all code from this project following this commit is not licensed under MPL-2.0. Code is now only available under the Apache License, Version 2.0 (Apache-2.0).
Merge branch 'master' of https://github.com/coderstephen/switchbox