Make it compilable with rust 1.0.0-alpha.

[3Hren]

This PR should close #45 and #23.

• Drop no longer required 'macro_rules' and 'globs' crate attributes, because they are part of the language now.
• Replaced 'deriving' with 'derive' keyword.
• Replaced int/uint with isize/usize respectively.
• Match 'serialize::Decoder' and 'serialize::Encoder' interface.
• Use num cast instead of removed 'to_*' methods.
• Allow unstable items (because I don't know what to do with them now).
• Fixed tests.
• Use new '{:?}' syntax in examples instead of '{}' to print messages generated via Show trait.
• Added myself in authors list.

[3Hren]

Oops, it compiles but broken due to improper use of new serialize API (my fault). I close it for now until a correct solution be found.