Update for rust master
Add myself to the Travis CI notifications list
Use the Rust nightly builds uploaded to http://static.rust-lang.org/

The hansjorg/rust PPA is apparently not the most current. These changes
are based on those used by the alexcrichton/rs-splay project.
Fix warning: phase(syntax) is a deprecated synonym for phase(plugin)
Fix error: failed to resolve import `std::container::Container`

The `Container` import is actually not needed.
Fix error: obsolete syntax: `~[T]` is no longer a type