Update merge help

Author: matthewpwilson

src/cli/generate/bundle/options/Merge.option.ts

@@ -22,6 +22,7 @@ export const MergeOption: ICommandOptionDefinition = {
     defaultValue: false,
     required: false,
     implies: ["overwrite"],
-    description: "Enable or disable the ability to merge new resources into an existing CICS bundle manifest."
+    description: "Enable or disable the ability to merge new resources into an existing CICS bundle manifest." +
+                 "Requires --overwrite to be specified."
 };