README improvements
Various clarifications and reformulations based on my experience using the README to build and run Gargantext. In particular:
- Information related to development has been given its own section
- Docker Compose has been added to the list of prerequisites
- Information pertaining to using Stack has been moved to an annex file
- The content to be copypasted into a
cabal.project.local
file has been moved out of the README into a separate filecabal.project.local_toCopy
Those may not be the best decisions, I am happy to discuss them if needed
Closes #365 (closed)