Enable options and Support for fonts

[loranger]

I needed to publish fonts from my bower file (ie: font-awesome) So I added a new gulp task.

Then I realized I needed some extra-options in order to export the font files where needed.

I was not really fan of adding an extra parameter, so I refactor the options handling and used lodash to recursively merge an option object.
This is not backward compliant, but really convenient when you just need to overwrite only one option.

[lahaxearnaud]

nice

[EHLOVader]

I would definitely use this but also would like to suggest that sprites and supporting images such as pngs or jpgs be added too. But for CSS and JS I have been using wiredep and useref.

Perhaps more generally file patterns, their destination folder or file, if concatenated and such. Or an option to not do CSS or JS

[Crinsane]

I'm really busy at the moment, but I'll try to have a look at this asap!