Place link to documentation "Running locally in a conda environment" in a more easily-noticeable location

[twallema]

• I mainly used the Running locally in a conda environment tutorial to install flepiMop. However, I've never used Docker before, and because the flepiMoP/README.md immediately points to Docker I started by installing Docker, only to find out I could use my preferred method of collaborating on code (git cloning, setting up conda, run code) after going through the Docker installation.

• I suggest pointing new collaborators ASAP to the quick-start-guide.md or quick-start-guide-conda.md by including a link in the main flepiMoP/README.md.

• Or alternatively, if Docker is usefull to outsiders just wanting to use the code, include a "for users" section pointing to Docker and a "for collaborators" section pointing to conda.

• The quick-start-guide.md and quick-start-guide-conda.md are actually very similar now that I'm comparing them, I suggest merging them into one quick start guide, which is the first thing a new user sees.

[TimothyWillard]

Closing, I think this is now superseded by GH-401.