Update README.md

Author: kropp

README.md

@@ -1,10 +1,12 @@
 # Toolbox Gateway plugin sample
 
-To load plugin into the provided Toolbox App, put files in the following directory:
+To load plugin into the provided Toolbox App, run `./gradlew build copyPlugin`
 
-Windows: `%LocalAppData%/JetBrains/Toolbox/cache/plugins/plugin-id`
-macOS: `~/Library/Caches/JetBrains/Toolbox/plugins/plugin-id`
-Linux: `~/.local/share/JetBrains/Toolbox/plugins/plugin-id`
+or put files in the following directory:
+
+* Windows: `%LocalAppData%/JetBrains/Toolbox/cache/plugins/plugin-id`
+* macOS: `~/Library/Caches/JetBrains/Toolbox/plugins/plugin-id`
+* Linux: `~/.local/share/JetBrains/Toolbox/plugins/plugin-id`
 
 Put all required .jar files (do not include any dependencies already included with the Toolbox App to avoid possible resolution conflicts),
-`extensions.json` and `icon.svg` in this directory.
+`extensions.json` and `icon.svg` in this directory.