am 52970cd0: Merge "Document how to build the master branch for devices."

* commit '52970cd00680520e6cd48310b79402382389b8f3':
  Document how to build the master branch for devices.
tree: 8b7f24db2220d1ab707a9b8c9507659e1b8fcc1a
  1. scripts/
  2. src/
  3. templates/
  4. .gitignore
  5. CleanSpec.mk
  6. README