Update Getting Started section of README
Update Getting Started section of README

HealthCatalyst/healthcareai-py,HealthCatalystSLC/healthcareai-py,HealthCatalyst/healthcareai-py,mxlei01/healthcareai-py,jpo/healthcareai-py,jpo/healthcareai-py,HealthCatalystSLC/healthcareai-py,mxlei01/healthcareai-py