README issue

[1sra3l]

Hi, the README does not syntax highlight the rust code
the example included use "rust" at the end of the code quotes, rather than the beginning.
It is because you have no-run in your lib.rs file, can you change this?

This is a very minor issue, but it also makes reading the example not as easy.

[1sra3l]

I also commented on an issue with (cargo-readme)[https://github.com/webern/cargo-readme/issues/75] which you might follow