scooter/motorbike icon

[sbma44]

maki 3 dropped scooter and I'm left unsure what to use for the Factual POI category Motorcycles, Mopeds and Scooters in our POI => maki mapping in the geocoder. A general motorized bike icon would be useful to have.

refs https://github.com/mapbox/sirius-ios/issues/611

[natslaughter]

@samanpwbb
Pushed draft scooter icons in the 'new-icons' branch.
Let me know what you think.

cc @sbma44

[aparlato]

Changed the 11px, and as per discussion with @natslaughter , slightly increased the visibility of the back wheel on the 15px, but otherwise largely left the previous version alone.

11:

15:

[natslaughter]

@aparlato
Looks great!
It seems that now the two icons might be slightly too different, especially in the seat area.
Do you think we should pick one direction and try to make the other icon more similar?

[aparlato]

@natslaughter
Modified the seats to be more similar. Below I've posted two versions, each with a different seat. Conflicted about which seat to choose as I prefer the one with the flatter front, but it may be less clear in the 11px.

Both options below for opinions:

11:

15:

---

11:

15:

[nickidlugash]

This was done.