Update Docs Readme

Added some more context to the docs readme for
folks looking to contribute. Also added the license
so its clear what the license of the docs site is. As
a small tweak I removed a duplicate string value and
use the Constant.

.gitignore

@@ -5,6 +5,7 @@
 [Pp]ackages/
 /.artifacts/
 /[Tt]ools/
+.idea
 .DS_Store
 
 # Cakeup

docs/README.md

@@ -1,8 +1,50 @@
 # Documentation
 
-Preview the documentation locally by running the following
-from your favourite shell:
+To start contributing to the [Spectre.Console](https://github.com/spectresystems/spectre.console) documentation, you will need the [.NET Core SDK](https://dot.net) 3.1 or higher.
+
+## Running Preview Site
+
+The documentation site uses [Statiq](https://statiq.dev), a static site generator. To build the documentation site run the following in a command-line terminal.
 
 ```
-> dotnet run -- preview --virtual-dir "spectre.console"
-```
+> dotnet run preview --virtual-dir "spectre.console"
+```
+
+After the build is complete, you can navigate to [http://localhost:5080/spectre.consle](http://localhost:5080/spectre.console).
+
+**Note that the site runs under a virtual directory.**
+
+## Editing Content
+
+The documentation is written using [Markdown](https://www.markdownguide.org/basic-syntax/).
+
+Markdown files can be found under the following directories:
+
+- [/input](./input)
+  - [/appendix](./input/appendix)
+    
+## Editing Layout
+
+Layout and styling can also be found in the [input](./input) directory. Look for Sass, Css, and Images under the [assets](./input/assets) directory.
+    
+## Custom Build Features
+
+The documentation site has custom enhancements to Statiq located under the [./src](./src) directory. Enhancements to the build process include:
+
+- [Extension Methods](./src/Extensions)
+- [Models](./src/Models)
+- [Pipelines](./src/Pipelines)
+- [Shortcodes](./src/Shortcodes)
+- [Utilities](./src/Utilities)
+
+## License
+
+MIT License
+
+Copyright (c) 2020 Spectre Systems AB
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

docs/src/Extensions/BootstrapperExtensions.cs

@@ -20,10 +20,7 @@ namespace Docs
 
         public static Bootstrapper ConfigureDeployment(this Bootstrapper bootstrapper, string deployBranch)
         {
-            if (bootstrapper != null)
-            {
-                bootstrapper.AddSetting(Constants.Deployment.TargetBranch, deployBranch);
-            }
+            bootstrapper?.AddSetting(Constants.Deployment.TargetBranch, deployBranch);
             return bootstrapper;
         }
     }

docs/src/Pipelines/ColorsPipeline.cs

@@ -9,15 +9,13 @@ namespace Docs.Pipelines
 {
     public class ColorsPipeline : Pipeline
     {
-        public const string Url = "https://raw.githubusercontent.com/spectresystems/spectre.console/main/resources/scripts/Generator/Data/colors.json";
-
         public ColorsPipeline()
         {
             InputModules = new ModuleList
             {
                 new ExecuteConfig(
                     Config.FromContext(ctx => {
-                        return new ReadWeb(Url);
+                        return new ReadWeb(Constants.Colors.Url);
                     }))
             };
 
@@ -32,4 +30,4 @@ namespace Docs.Pipelines
             };
         }
     }
-}
+}