Adding GeoPHP to to the GIS section

Project name:

Project website/repository:

License:

Checklist for new projects:

[x] The project is open-source and accessible.
[x] Searched the existing entries to make sure this is not a duplicate.
[x] Contains only a single addition (make separate PRs if adding more than one).
[x] Added the link to the bottom of the relevant category.
[x] Add icon from the media/icon/ folder if applicable (like ![Python](media/icon/python.png) ).
[x] Created a new category only if necessary.
[x] Checked spelling and grammar.
[x] Removed trailing whitespace and periods.
[x] Confirm the dash – is not a minus -.
[x] Used title-casing (AP style) for project name.

pangeo-data / awesome-open-climate-science