Update README.md

README.md

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 # SpaceVM_VM_Utility
 Utility to manage Virtual Machines in SpaceVM.
 
-Written in python, uses API to collect and manage existing Virtual Machines in your SpaceVM cluster.
+Written in python, uses [SpaceVM API](https://spacevm.ru/docs/6.5/api/) to collect and manage existing Virtual Machines in your SpaceVM cluster.
+
+_For now, this utility is focused on managing virtual disks_
+
+_Works with SpaceVM 6.5.5+_
+
+# Config File
+Config file contains all necessary data for utility and has to be placed in the same directory as Utility itself.
+
+You can populate config within Utility Main Menu.
+
+For manual input see format below:
+```
+Controller IP Address
+API Integration Key
+Data Pool UUID
+VM UUID #1
+VM UUID #2
+VM UUID #3 
+...
+```