Update coveralls to 2.1.1#324

pyup-bot wants to merge 1 commit intomasteropsdroid/opsdroid-audio:masterfrom

pyup-update-coveralls-1.11.1-to-2.1.1opsdroid/opsdroid-audio:pyup-update-coveralls-1.11.1-to-2.1.1Copy head branch name to clipboard