am 2a79defa: Merge "docs: add guide to copying and installing the Dev Tools app from the emulator to a device." into eclair

Merge commit '2a79defa5a0481e4dd980938da13adc767e0b231' into eclair-plus-aosp

* commit '2a79defa5a0481e4dd980938da13adc767e0b231':
  docs: add guide to copying and installing the Dev Tools app