Added Repo Ripper to use Repo's as Context for the model

[JakeFurtaw]

Hey all!

Today I added support for using any public GitHub Repository as context for the model. You can use a repository alongside any documents. I have not tested it, so it is still only on the dev branch. If anyone wants to test it out I can't tonight. Leave a comment and let me know if it works.
To use this feature all you have to do is enter the Owner's Github Username, The Repository Name, and The Branch you want to use for context. Make sure you enter all of it in the correct text boxes and make sure the info is all accurate. Then hit the Load GitHub Repository Button. Then Hit the Upload Repo Button and wait about a few seconds for the model to reload. Then back to chatting.

Don't forget to add a GitHub Personal Access Token to the environment file. I updated the readme file to show you how your environment file should look.

Any feedback or suggestions of features you guys want to see would be great!

-Jake