Migrate docs to Markdown and update docs

 ## Why is the change being made?

This change is made because reStructured text could be a more difficult
style of documentation to adapt to (for newer developers) than Markdown.

 ## What has changed to address the problem?

This change removes the Sphinx reStructured text documentation in GCS
and replaces it with a MkDocs Markdown text documentation structure.

Everyone contributing to the project will have to follow the
instructions under `docs/contributing/getting-started.md`.

There is additional added documentation to address the following:
- How to work with GCS (running, building, and testing)
- Installing MkDocs to see docs locally in `localhost:8000`.
- Adding control messages for manual vehicle control
- Adding geofencing field to start messages

 ## How was this change tested?

This change was tested by checking if the docs looked fine when running
`npm run docs`.

.eslintignore

@@ -1,4 +1,4 @@
 # Directories for eslint to ignore
 
 dist
-docs/_build
+site

.gitignore

@@ -1,11 +1,11 @@
-# Ignore system generated files/folders
+# Ignore generated files
 .DS_Store
 package-lock.json
-docs/make.bat
-docs/Makefile
+
+# Ignore generated folders
 dist
 node_modules
-docs/_build
+site
 
 # Ignore .env file (should be set per system)
 .env

.remarkrc.yml

@@ -0,0 +1,10 @@
+plugins:
+  # Use style guide preset
+  - remark-preset-lint-markdown-style-guide
+
+  # Added rules
+  - [lint-maximum-line-length, 100]
+  - [lint-rule-style, ----------------------------------------------------------------------------------------------------]
+  - [lint-definition-case, false]
+  - [lint-list-item-indent, tab-size]
+  - [lint-ordered-list-marker-value, ordered]

.stylelintignore

@@ -1,4 +1,4 @@
 # Directories for stylelint to ignore
 
 dist
-docs/_build
+site

README.md

@@ -0,0 +1,50 @@
+# NGCP Ground Control Station
+
+[![Build Status](https://travis-ci.com/NGCP/GCS.svg?branch=master)](https://travis-ci.com/NGCP/GCS)
+[![Documentation Status](https://readthedocs.org/projects/ground-control-station/badge/?version=latest)](https://ground-control-station.readthedocs.io/en/latest/?badge=latest)
+[![dependencies Status](https://david-dm.org/NGCP/GCS/status.svg)](https://david-dm.org/NGCP/GCS)
+[![devDependencies Status](https://david-dm.org/NGCP/GCS/dev-status.svg)](https://david-dm.org/NGCP/GCS?type=dev)
+
+## Introduction
+
+The [Northrop Grumman Collaboration Project][] presents the Ground Control Station (GCS). This
+project's objective is to view and set missions for all autonomous vehicle platforms in the project.
+
+Documentation for the GCS can be found [here](https://ground-control-station.readthedocs.io/).
+
+## Quick start
+
+### Setting things up
+
+You will need the LTS version of [Node.js][].
+
+Open up your command line application and clone this repository
+
+```bash
+git clone https://github.com/NGCP/GCS.git
+```
+
+### Running the program
+
+Create a [Mapbox][] account and obtain a public API access token. Create a `.env` file, copy the
+content of the `.env.example` to it, and replace `your-access-token` with your own access token.
+
+```bash
+MAPBOX_TOKEN=your-access-token
+```
+
+Install all required third-party libraries and run the program:
+
+```bash
+npm install
+npm start
+```
+
+## License
+
+[MIT][]
+
+[Northrop Grumman Collaboration Project]: http://www.ngcpcalpoly.com/about.html
+[Node.js]: https://nodejs.org/
+[Mapbox]: https://www.mapbox.com/
+[MIT]: https://github.com/NGCP/GCS/blob/master/LICENSE