Adding essential space to docs

Without the space you get funny errors.

```
↳ docme  README.md-- --configure ./jsdocrc.json
ERR! docme Error: The readme: README.md-- was not found from /Users/todd/src/JSXHint!
ERR! docme     at /usr/local/share/npm/lib/node_modules/docme/index.js:48:8
ERR! docme     at Object.cb [as oncomplete] (fs.js:168:19)
ERR! docme  [Error: The readme: README.md-- was not found from /Users/todd/src/JSXHint!]
```