Can't call fs functions when they are unbound

[eugirdor]

When using the standard fs module, the follow will work:

var fs = require('fs');
var stat = fs.stat;
stat('/var/www', function (err, stats) {
})

However, when using fs-mock, an error will get thrown because the method loses its context and most of the methods make use of this.

I believe the fix would be to change the thin arrows -> on the fs methods in fs.coffee to be fat arrows => so that they stay bound to the correct object.

[davidkudera]

Hi and thanks for writing that issue. This should be solved in next version which will be writen in pure javascript. Unfortenately I don't have any free time right now, so hopefuly next week..