plt/racket — pull request #296 by greghendershott (2013-03-27 13:32:14+00:00)
Title: Fix problem handling `examples` and `interaction`.

> @soegaard reported this to me yesterday on IRC. He noticed it [here](https://github.com/soegaard/bind/blob/master/README.md).

Unlike plain `racketblock`, `examples` and `interaction` are
"nested". As a result we emitted bad Markdown like:

```racket
Examples:
```racket
some-code
```
```

Markdown code blocks can't nest, so this needs to be:

```racket
Examples:
some-code
```

Also: Updated the unit test with examples of `examples` and
`interaction`.