Update README.md

Author: austinsonger

README.md

@@ -34,6 +34,10 @@ That this project will be created by the SOC/Incident Response Community
 - [X] [Playbook: T1189 - Drive By Compromise](/Playbooks/MITRE-ATTACK/Initial%20Access/T1189-Drive-By-Compromise.md)
 - [X] [Playbook: T1566 - Phishing](/Playbooks/MITRE-ATTACK/Initial%20Access/T1566-Phishing-(T1566.001-T1566.002-T1566.003).md)
 
+#### Collection
+
+- [X] [Playbook: T1114 - Cloud Email Compromise](/Playbooks/MITRE-ATTACK/Collection/T1114-Cloud-Email-Compromise.md)
+
 
 #### Defense Evasion