Provide all options for reading the documentation

Author: mvhulten

README.md

@@ -9,7 +9,7 @@ The generator follows the official CLM-workflow but makes a few adaptions.
 
 ## Usage / Documentation
 
-Please check the documentation at https://hpscterrsys.github.io/eCLM_static-file-generator/INDEX.html
+Please check the documentation at <https://hpscterrsys.github.io/eCLM_static-file-generator/INDEX.html>, [build a rendered version yourself](docs/README.md) or browse it locally (in your terminal: `vim -R docs/users_guide/?_*.md`).
 
 ## License
 eCLM static file generator is open source software and is licensed under the [MIT-License](https://github.com/HPSCTerrSys/eCLM_static-file-generator/blob/master/LICENSE).