Update the list of alts

[havenwood]

• Listed the language for each tool
• Removed listings that no longer have code or never had code
• Fixed broken links

[mpapis]

what happened to https://github.com/jayferd/ry ?

[havenwood]

@mpapis It's still on the list of switchers, it's just not an installer. It uses ruby-build to install.

[mpapis]

hmm, ry does build rubies by itself too: https://github.com/jneen/ry/blob/master/bin/ry#L128-L153 + https://github.com/jneen/ry/blob/master/bin/ry#L164-L224 (whicjh odly looks like limited version of RVM code)

[havenwood]

Aha, I didn't realize. Interesting.

[mpapis]

thank you!