Renamed teabag to teaspoon as teabag is renamed to teaspoon

- According to this https://github.com/modeset/teaspoon#developer-notice we have to rename every instance of teabag to teaspoon
Merge pull request #157 from prathamesh-sonpatki/teabag_to_teaspoon

Renamed teabag to teaspoon as teabag is renamed to teaspoon