Update RCloud Github home page

[martymcwizard]

Please update

http://att.github.io/rcloud/

for the latest release.

Please ensure normal github conventions are followed so that users can find this page if they are at github.com/att/rcloud

(I apologize, I don't know what those conventions are and I don't know how to find this page from what I thought was the main page)

[gordonwoodhull]

• [ ] screencasts are pre-1.0 (i have done new ones but they need to be scrubbed)
• [x] it links to cscheid/rcloud in two places
• [x] update authors

As for the link from github, I think that just means adding a link to the README - at least, I don't know of anything built-in.

[gordonwoodhull]

will be updated in 1.3.1

[gordonwoodhull]

I got impatient and pushed these changes.

The screencasts still need updating (although I get nostalgic looking at them).