Hosting tools on GitHub

I would love for a way to host my toolbox tools on GitHub or BitBucket and still be able to run them directly through the Run Tool.

Here are some great benefits I can think of

Pros:
• Track changes and revisions.
• Collaborate with others (who are writing the code for the tools).
• Backed up in case the server crashes.

Cons:
• Delay when running the tool
• Those websites may be blocked on users computer. It would have to download a temporary file (which is the tool) from the site and run it, then delete it from the server.