add support foor webpack

[fogetIt]

No description provided.

[jaredh159]

If you don't want to wait for this to get merged (since there's been very little activity recently) you can depend on my fork which includes CommonJS/AMD support and plays nice with webpack out of the box. Just change your package.json to depend on:

"slidebars": "git+ssh://git@github.com/jaredh159/Slidebars.git#3.0.0"

And then yarn or npm install.

[mablae]

Thank you, this saves my day! I am relying on your fork now! ;-)