chore: update readme

README.md

@@ -1,3 +1,11 @@
 # Versionguard
 
-TODO
+**Diverging core dependencies between multiple applications are a thing of the past! Versionguard is here to protect your applications from out of sync dependencies - on your terms!**
+
+
+## Features
+- :tada: Manage blessed dependency versions across multiple applications with ease
+- :clipboard: Multiple application groups with multiple dependency sets for tailored version governance
+- :alarm_clock: Grace periods allow for staggered upgrading
+- :vertical_traffic_light: Tiered version checking: pass, tentantive pass and fail
+- :zap: Automatically fail builds on CI when dependencies are out of date