update licenses, create separate topic, move to prereq

Author: DebLanger

exposure-management/TOC.yml

@@ -7,7 +7,9 @@
       - name: What is Microsoft Security Exposure Management?
         href: microsoft-security-exposure-management.md
       - name: What's new 
-        href: whats-new.md      
+        href: whats-new.md
+      - name: Integration and licensing
+        href: integration-licensing.md       
       - name: Compare Secure Score and Security Exposure Management
         href: compare-secure-score-security-exposure-management.md      
     - name: Get started