Version and wrapper-options are not working with grunt

[daniel-franz]

...as those options are supposed to be in options.options

options is:

{
    src: '*.mustache',
    out: 'filename.js',
    options: {
        version: '2.0.0-pre'
    }
}

[daffl]

The docs were wrong, it is actually supposed to be

{
    src: '*.mustache',
    out: 'filename.js',
    version: '2.0.0-pre'
}

I changed it in the documentation but in the next version this should indeed move into options though.
Would like to fix #5 for that as well as we are getting close to a DOM-less compilation.

[daniel-franz]

A docu-fix is ok, too. Thanks a lot.

[daffl]

Lets keep this PR open so that I don't forget to change the Grunt task options when we have the DOM-less compilation.