A Mill plugin example

Publish the plugin to local Ivy repo:

mill _.publishLocal

$ cd usage-example
$ mill _.hello 1 2 3
[1/1] UsageExample.hello 
Hello, world! Args: List(1, 2, 3)

Name		Name	Last commit message	Last commit date
Latest commit History 1 Commit
mill-plugin-example/src/nl/zolotko/mill/example		mill-plugin-example/src/nl/zolotko/mill/example
usage-example		usage-example
.gitignore		.gitignore
README.md		README.md
build.sc		build.sc