Updating Usage code section of package_macos.jai

macos_development/package_macos.jai

@@ -2,7 +2,23 @@
   This is heavily based (read: copy pasted + some modifications) on Thekla's module 
   MacOS_Bundler.jai, released with the jai compiler. 
   
-  Usage:
+  For usage code, see package_macos_example.jai
+  
+  This routine creates a .app file with the following structure:
+  
+  output_path/
+    Entitlements.xcent
+    <output_name>.app/
+      Contents/
+        Info.plist
+        MacOS/
+          <output_name> <-- the executable, copied from args.exe_path
+          ...copied in args.dynamic_libs
+        Resources/
+          icon_data.icns
+          ...the contents of args.asset_directory
+          
+  
 */
 
 #import "Basic";