Update README.md

README.md

@@ -1,3 +1,16 @@
 # autouser
 
-Small shell script made for automatically creating and deleting a large amount of Linux users or groups.
+Small shell script made for automatically creating and deleting a large amount of Linux users or groups.
+
+# # Usage
+```
+./autouser.sh $PARAMETER file.csv
+
+PARAMETERS
+    --help || -h (Show this help prompt)
+    --dry-run (Test without executing any changes)
+    --create-users users.csv (Create users from a .csv file)
+    --create-groups groups.csv (Create groups from a .csv file)
+    --delete-users users.csv (Delete users from a .csv file)
+    --delete-groups groups.csv (Delete groups from a .csv file)
+```