Build OpenWRT and flash/upgrade devices

cryobry e44fe04195 Update .atom-build.yml to use simpler profile-driven defaults %!s(int64=5) %!d(string=hai) anos
.atom-build.yml e44fe04195 Update .atom-build.yml to use simpler profile-driven defaults %!s(int64=5) %!d(string=hai) anos
.gitignore 252cd4e3a5 Update .gitignore %!s(int64=5) %!d(string=hai) anos
README.md 2ed7b2d879 Add README %!s(int64=5) %!d(string=hai) anos
openwrtBuild c3ab6aed3f Merge functions back into openwrtBuild and refactor input %!s(int64=5) %!d(string=hai) anos

README.md

See openwrtBuild --help or openwrtContainerBuild --help for options.