Update 'Modules'

Modules.md

@@ -16,6 +16,19 @@ https://omeka.org/s/modules/CustomVocab
 
 Download the latest stable version and follow the [installation instructions](https://omeka.org/s/docs/user-manual/modules/#installing-modules)
 
+When the module is successfully installed, you we have new option called 'Custom Vocab' available in your dashboard.
+
+Find the option and create a new vocabulary. Call it `State`
+
+Add the terms of the vocabulary (one per line)
+```
+Stable
+Unstable
+Living
+Dead(fixed or decaying)
+Inert
+```
+
 # Numeric Data Types
 
 https://omeka.org/s/modules/NumericDataTypes/