adds README.md

README.md

+Welcome to the codebase of the Terrestrial Mapping Platform (TMP).
+
+Many TMP projects have dedicated repositories. These include:
+
+* [UAV applications](https://code.cs.earlham.edu/field-science/uav_app)
+* [Image analysis workflows](https://code.cs.earlham.edu/field-science/uav_app)
+
+For documentation, see the [wiki](https://code.cs.earlham.edu/field-science/terrestrial-mapping-platform/-/wikis/home).
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