To add your library to the map, simply input your library's information into the Pokémon battle form. This requires the use of a Gmail account. Once you have entered your library's information, you will have the option to edit the form to update the information as it changes each day. It takes a few moments for the map to update with your added or updated information.
My library is not near a gym.
If your library does not have a gym nearby, you can submit a request for a gym to Pokémon Go.
Embed the map in your own site
If you would like to embed the map into a local page, you can copy and paste the following into the HTML of your web page:
<iframe width="500" height="300" scrolling="no" frameborder="no" src="https://www.google.com/fusiontables/embedviz?q=select+col6+from+1UYY-RvO-dx1BnKBmYgVphOpXvs2krXIsXtU93Rcp&viz=MAP&h=false&lat=47.504357481123165&lng=-9.095975758880845&t=1&z=1&l=col6&y=2&tmplt=2&hml=TWO_COL_LAT_LNG"></iframe>