am 2a666620: am 1f196903: Merge "add note to use "480" instead of "xxhdpi" (this should be temporary)" into jb-mr2-docs

* commit '2a6666207d0e0b7545cbd1f0a7f6754d5ca1587b':
  add note to use "480" instead of "xxhdpi" (this should be temporary)