Help Windows users get readable, colorized compiler output

I think the raw ANSI codes in the compiler output on Windows consoles are scaring away people.  It's difficult to find the relevant error when it isn't highlighted in red like it is in a unix terminal.

I updated the README to reflect steps to correct this on the user side.  I've confirmed that they work on Windows 7 machines wonderfully.

To be concrete, instead of having every line surrounded by `\u001b[33m` codes, they will see this:
![error-small](https://cloud.githubusercontent.com/assets/116838/4304691/a8531bac-3e72-11e4-909a-053cfa78a8a5.png)