Doc examples are broken

[dsgallups]

When looking at the examples on latest Firefox/Chrome versions, the following error appears in the console.

As a result, the provided examples do not function, and the code sections are not viewable.

[dsgallups]

I'll see if I can scope out the issue.

[dsgallups]

I can't quite tell the issue, though the error points into graceful-fs which shouldn't work in browsers.

[uwemaurer]

This PR #156 introduced this bug. The docs page still works when I go to the preview site of the commit before. @Hugos68

[Hugos68]

@dsgallups Thanks for reporting, totally missed this, excuse for the long wait.
@uwemaurer Thanks for investigating, I'll try to push out a fix once I've discovered why this happens.

[Hugos68]

@dsgallups @uwemaurer This is now resolved by #162, thanks!

[dsgallups]

Thank you!