Documentation omnibus issue

[aendra-rininsland]

There's quite a lot of unfinished documentation in the README, so I'm creating an issue to help track progress and try and improve that. These are specifically things I've noticed while using g-axis from scratch (and not simply copying a template).

Undocumented

• yLinear No docs
• xOrdinal No docs
• yOrdinal No docs

General

• When should one "call" the axis?
• How do I prevent my labels from being outside the plot?
• How and when do I need to translate axes?
• What does .plotDim() do? When do I need to set it?
• What does .frameName() do? When do I need to set it?
• Why do some axes have .round() and some have .rangeRound()?