Update documentation

[jcfr]

What's the problem this feature will solve?

Current page hosted at https://cell-locator.readthedocs.io does not clearly document:

• Overview of the interface
• Available command line modules

Describe the solution you'd like

Add the following sections

• Update Getting Started section to include sections:

  • System Requirements
  • Installing Cell-locator

• Move as a top-level section

  • Coordinate System
  • User Interface/LIMS Integration -> LIMS Integration
  • Consolidate content of Developer Guide / LIMS Integration with the new top-level LIMS Integration section

• Update User Interface to include Application overview

• Add Command-line Tools

  • By integrating https://github.com/BICCN/cell-locator/blob/master/Scripts/README.md

Alternative Solutions

Additional context

[jcfr]

The documentation illustrating the impact of the coordinate system updates associated with the first few releases of Cell Locator has been migrated to a wiki page.

See https://github.com/BICCN/cell-locator/wiki/Coordinate-System-Updates