Improve README

README.md

@@ -27,11 +27,54 @@ Colorization and configuration supports for multiple languages for the Monaco Ed
 
 This npm module is bundled and distributed in the [monaco-editor](https://www.npmjs.com/package/monaco-editor) npm module.
 
-## Dev:
+## Dev: cheat sheet
 
+* initial setup with `npm install .`
 * compile with `npm run watch`
 * test with `npm run test`
 * bundle with `npm run prepublish`
 
+## Dev: Running monaco-languages from source
+
+* clone https://github.com/Microsoft/monaco-languages in `$/src/monaco-languages`
+* run `$/src/monaco-languages> npm run watch`
+* clone https://github.com/Microsoft/monaco-editor in `$/src/monaco-editor`
+* run `$/src/monaco-editor> npm run simpleserver`
+* edit `$/src/monaco-editor/test/index.html` and set `RUN_PLUGINS_FROM_SOURCE['monaco-languages'] = true;`
+* open http://localhost:8080/monaco-editor/test/
+
+### [Optional] Running monaco-editor-core from source
+
+* this is only needed when you want to make changes also in `monaco-editor-core`.
+* clone https://github.com/Microsoft/vscode in `$/src/vscode/`
+* run `gulp watch`
+* edit `$/src/monaco-editor/test/index.html` and set `var RUN_EDITOR_FROM_SOURCE = true;`
+* open http://localhost:8080/monaco-editor/test/
+
+## Dev: Adding a new language
+
+* create `$/src/myLang.ts`
+* create `$/test/myLang.test.ts`
+* update tsconfig.json with `$> node_modules/.bin/tscg .`
+* restart compilation with `$> npm run watch`
+* edit `$/src/monaco.contribution.ts` and register your new language:
+```js
+registerLanguage({
+	id: 'sql',
+	extensions: [ '.sql' ],
+	aliases: [ 'SQL' ],
+	module: './sql'
+});
+```
+* edit `$/test/all.js` and load your new language while testing
+```js
+'out/test/sql.test',
+```
+* edit `$/gulpfile.js` and ship your new language
+```js
+bundleOne('src/sql'),
+```
+
+
 ## License
 [MIT](https://github.com/Microsoft/monaco-languages/blob/master/LICENSE.md)