Readme updates

The purpose of this pull request is to update the `README.md` file to utilize [syntax highlighting][1] for the code examples:

### Before:

![2014-02-27-215841_766x540_scrot](https://f.cloud.github.com/assets/606001/2288694/315fadc6-9ffd-11e3-8d60-caaacdfd70ad.png)

### After:

![2014-02-27-221651_753x550_scrot](https://f.cloud.github.com/assets/606001/2288695/357482f6-9ffd-11e3-900b-f1d2c30bc026.png)

I've also made the following changes:

- Fixed emphasis syntax on a note block
- Fixed a few misspelled words
- Updated copyright year

Thanks!

[1]: https://help.github.com/articles/github-flavored-markdown#syntax-highlighting