replaced acc with new, improved, hospital cost measure
Merge pull request #74 from Ank13/slidepanel_info

replaced acc with new, improved, hospital cost measure
adds readmission bubbles
updates color for readmission rate
Merge branch 'readmission_rate' of https://github.com/Ank13/ops_hospital_mapper into readmission_rate

Conflicts:
	app/models/hospital.rb