Crunchbase has retired the v1 api and I unfortunately do not have the time to bring this gem up to date with v2. This project and gem are therefore retired as well.
A number of folks have created gems for v2. I have not personally used any of them as I don't use Crunchbase for any current projects, but links can be found in the Crunchbase developer documentation: developer.crunchbase.com/docs
Thanks to all who contributed code and apologies for not being able to maintain the project further.