add links to converter and tutorial

[kgjenkins]

I've added a section 3, with links to:

• the shapefile-to-geojson converter page
• the OpenIndexMaps workshop tutorial from Geo4LibCamp

I only edited the index.md page, but am running into errors when trying to view as GitHub Pages in my fork of the repo:

Your site is having problems building: Your SCSS file assets/main.scss has an error on line 5: File to import not found or unreadable: ../node_modules/bootstrap/scss/functions. Load paths: _sass /hoosegow/.bundle/ruby/2.5.0/gems/jekyll-theme-primer-0.5.4/_sass /hoosegow/.bundle/ruby/2.5.0/gems/jekyll-theme-primer-0.5.4/_sass. For more information, see https://help.github.com/en/github/working-with-github-pages/troubleshooting-jekyll-build-errors-for-github-pages-sites#invalid-sass-or-scss.

But maybe I'm missing something from the way things are set up in the the original repo...

[mejackreed]

Thanks for this contribution!!

[kgjenkins]

@mejackreed, I see the updates in the master branch, but am not seeing the updates on openindexmaps.org. Does that site get served directly from github pages, or is it hosted elsewhere?

[mejackreed]

Thanks, I'll look into it.

[mejackreed]

Should be updated now @kgjenkins