fix icon size of quick_camera_rear
this also changes BUILDING.md to reflect the new syntax of pngs_from_svg.py fixes #3769 closes #3770 // FREEBIEpull/1/head
Before Width: | Height: | Size: 310 B After Width: | Height: | Size: 339 B |
Before Width: | Height: | Size: 310 B After Width: | Height: | Size: 213 B |
Before Width: | Height: | Size: 560 B After Width: | Height: | Size: 371 B |
Before Width: | Height: | Size: 784 B After Width: | Height: | Size: 546 B |