Add ClojureScript example to Node using shadow-cljs

Author: lambrospetrou

minimal-shadow-cljs-nodejs/.gitattributes

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+
+yarn.lock -diff

minimal-shadow-cljs-nodejs/.gitignore

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+build/
+node_modules/
+target/
+/yarn.lock
+.shadow-cljs/
+.nrepl-port

minimal-shadow-cljs-nodejs/README.md

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+Node.js example with ClojureScript with [shadow-cljs](https://github.com/thheller/shadow-cljs)
+----
+
+- [Shadow-cljs](http://shadow-cljs.org/)
+- [Integrate with NPM modules](https://shadow-cljs.github.io/docs/UsersGuide.html#npm)
+- [ClojureScript cheatsheet](https://cljs.info/cheatsheet/)
+
+### Develop
+
+Watch compile with with hot reloading:
+
+```bash
+npm run install
+npm run watch
+```
+
+Start program and connect reload server:
+
+```bash
+npm start
+```
+
+### REPL
+
+Start a REPL connected to current running program, `app` for the `:build-id`:
+
+```bash
+npx shadow-cljs cljs-repl app
+```
+
+### Build
+
+```bash
+npm run build
+```
+
+Compiles to `build/main.js`.
+
+You may find more configurations on http://doc.shadow-cljs.org/ .
+
+### License
+
+MIT