API and docs

[rubjo]

Hi, this looks promising.

Any plans to add this to npm and adding some simple docs for how to achieve some common operations when used as a library?

For example:

• Move and zoom to specific building
• Rotating to specific camera angle
• Activating interior view and selecting floor (some kind of quick transition/animation?)
• Highlighting a specific room / area with a colour overlay
• Showing some text in a tooltip or similar attached to a room / area