docs: add supported langs section to README

Author: eddyerburgh

README.md

@@ -26,3 +26,17 @@ Example repositories testing Vue components with jest and jest-vue:
 
 - [Avoriaz with Jest](https://github.com/eddyerburgh/avoriaz-jest-example)
 - [Vue Test Utils with Jest](https://github.com/eddyerburgh/vue-test-utils-jest-example)
+
+## Supported langs
+
+jest-vue compiles the script and template of SFCs into a JavaScript file that Jest can run. **It does not currently compile the style section**.
+
+## Supported script languages
+
+- **typescript** (lang="ts", lang="typescript")
+- **coffeescript** (lang="coffee")
+
+## Supported template languages
+
+- **pug** (lang="pug")
+- **jade** (lang="jade", lang="jade")