Documentation improvements

[arggh]

I stumbled across this interesting project and started toying around in the playground.

Some things I was looking for, but couldn't find mentioned in the docs:

• Color alpha
• Isomer options, such as scale

Especially the scale option might be worth adding to the documentation and/or examples?

[jbovenschen]

Good catch, do you mind to create a PR for those options?

[arggh]

Sure thing: #96

[blubbll]

scale is pretty cool, it's fun to zoom the scene :D