Update README

README.md

 # mdx-saas-config
 
-Configuration repository for MDX as a service pilot
+Configuration repository for MDX as a service pilot
\ No newline at end of file
+
+## Configuration
+```inventory/inventory```
+
+  * contains all the machines alt-mdx should be deployed to grouped by function
+
+```inventory/group_vars/all.yml```
+
+  * contains the tlds and dns/server/proxy configuration for those machines
+
+```files/[tld].yaml```
+
+  * contains the GeoDNS configuration as a yaml file.