Add Open Source download instructions.

Author: reidspencer

docs/OSS/index.md

@@ -0,0 +1,19 @@
+# Ossum Open Source Software
+
+In this section you will find open source software released by Ossum Inc. Feel free to try it out! There is no charge 
+for using this Ossum software! 
+
+Here are the open source projects:
+
+* [RIDDL](./riddl/index.md)
+* [VS Code Extension For RIDDL](./vscode-extension/index.md)
+* [IntelliJ IDEA Plugin](./intellij-plugin/index.md)
+
+---
+
+If you have any questions or need assistance, please contact our support team at support@ossuminc.com
+
+If you are interested in contributing to our open source projects, please visit our GitHub organization at
+https://github.com/ossuminc. 
+
+

docs/OSS/intellij-plugin/index.md

@@ -0,0 +1,7 @@
+# IntelliJ IDEA Plugin
+
+This plugin provides support for the RIDDL language in IntelliJ IDEA.
+
+# BETA Program
+
+To install the plugin, download the latest release from the [GitHub Releases](https://github.com/riddl-org/riddl/releases) page.

docs/OSS/vscode-extension/index.md

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+# VS Code Extension For RIDDL
+
+This extension provides support for the RIDDL language in Visual Studio Code. It includes 
+syntax highlighting, code completion, and other features to enhance your development 
+experience with RIDDL.
+
+## BETA Program
+
+Currently this extension is in beta. To access it, download from 
+Send them the .vsix file and these instructions:
+
+0. Download the [.vsix file from Ossum's Public/OSS folder](https://drive.google.com/uc?export=download&id=1DYyEkG77uXvAnmr_-OSUgizkDZk0TGOR
+   ) to your computer
+1. Open VS Code
+2. Press Cmd+Shift+P (Mac) or Ctrl+Shift+P (Windows/Linux)
+3. Type "Install from VSIX" and select it
+4. Browse to the downloaded riddl-vscode-0.9.0.vsix file 
+5. Click "Install" and reload VS Code
+
+Or via command line:
+code --install-extension /your/path/to/riddl-vscode-0.9.0.vsix
+
+## Released Product
+
+When this product is released as version 1.0, it will be available from the VS Code Marketplace. 
+To install from there, just:
+
+1. Open VS Code
+2. Click on the Extensions tab in the left sidebar
+3. Type "Riddl" in the search bar and select the Riddl extension from the list
+4. Click "Install" and reload VS Code
+
+---
+
+If you have any questions or need assistance, please contact our support team at support@ossuminc.com 
+
+If you interest in contributing to this extension, please visit our GitHub repository at 
+https://github.com/ossuminc/vscode-extension-riddl.
+

docs/index.md

@@ -7,6 +7,7 @@ This site provides documentation for technologies created at Ossum, Inc.
 
 THe sections at the top correspond to our products:
 
+* [OSS](oss/index.md)
 * [RIDDL](riddl/index.md)
 * [Synapify](synapify/index.md)
 * [Docify](docify/index.md)