Added README and tests directory to the template.

Author: drewoldag

README.md

@@ -0,0 +1,6 @@
+How to use:
+
+1) Install Python 3.7 or newer
+2) Install Git 2.27 or new
+3) Install `copier` with pipx, like so: `pipx install copier`. (Install pipx if needed)
+4) `copier gh:lincc-frameworks/python-project-template <path/to/destination>`