adding fast mapping documentation for buildings and roads

[abhisheksaikia]

Fast mapping documentation for buildings and roads. @maning can you review once?

[maning]

@abhisheksaikia did a quick review, I combined the advnace mapping and your fast mapping section. I think this best so all tips and tricks will come in one section. I think each tip should have a quick GIF so readers can try it out right away. The main idea is for them to learn each trick and combine them to do more complex tasks which is what our videos show.

Next actions

• [x] @abhisheksaikia add GIFs
• [ ] @maning do another round of review

[maning]

Quick idea maybe far fetched but nice. Can we emojify our guides? 😛