Modify README

Fix issue reference in README

Merge pull request maierj#30 from maierj/implement-usage-statistics

Migrate tracking from firebase to cloud functions.

Merge pull request maierj#20 from maierj/ruby-gem-caching

Add optional parameter for bundle install and caching location

Add name to workflow

Merge pull request maierj#14 from maierj/ubuntu-support

Ubuntu support

Merge pull request maierj#5 from maierj/feature/fastlane-options-input

Bug fix

Fix directory change

Updated README.md

Updated README.md