ADD read me
CHANGE docs for methods
ADD removal of the option after all themes have been switched
Merge branch 'master' of github.com:ubc/switch-site-to-default-theme-when-active-theme-is-deleted

* 'master' of github.com:ubc/switch-site-to-default-theme-when-active-theme-is-deleted:
  ADD read me CHANGE docs for methods ADD removal of the option after all themes have been switched