Tutorial links to 0.1 release / too many divergent install instructions

[lkuper]

https://doc.rust-lang.org/doc/tutorial.html#installation links to the 0.1 tarball. It should probably point to the current release. On that note, it would be nice if there existed a URL that always pointed to the current release.

[catamorphism]

Blocked on #2381

[kud1ing]

I am a bit unhappy that the installation process is described in 4 places:

• compilation instructions and link to tarball in the tutorial: http://doc.rust-lang.org/doc/tutorial.html#installation
• compilation instruction in the wiki: https://github.com/mozilla/rust/wiki/Doc-getting-started
• compilation instruction in the INSTALL.txt: https://github.com/mozilla/rust/blob/master/INSTALL.txt
• links to installers and tarball on the homepage: http://www.rust-lang.org/

I propose that we settle on one place only.
I also suggest that we point to binary installers and package managers like brew foremost and reserve compilation instructions for advanced users.

[lkuper]

The https://github.com/mozilla/rust/wiki/Doc-getting-started page that @Lenny222 links to dates back to before we had releases, so the directions given there are how to build from git, not how to install a release. Now that we have releases, I think it makes sense to distinguish between installation instructions for developers and installation instructions for users. That page should therefore probably be in the "Notes" section of the wiki (for developers) and not the "Doc" section (for users). I'll file a separate bug for that.

Aside from that, it's true that there's redundancy between the compilation instructions in the tutorial and those in INSTALL.txt, but I don't think it's a big problem (unless the instructions disagree, of course).

[lkuper]

So, as of this moment, the tutorial has a link to 0.1, which is old, and wget instructions for 0.3, which doesn't yet exist. I've just pushed a patch that changes both to 0.2, and we can update them both to 0.3 as soon as it sees the light of day.

[lkuper]

This is the last issue open for 0.3. (Yay!)

How about that URL that always points to the current tarball; is that doable?

[lkuper]

Closed by 57e160b