Updating methods to use buffers, adding tests, addressing feedback
use '-o short' console output in start-local.sh
Merge pull request #175 from dannycoates/shortconsole

use '-o short' console output in start-local.sh
Removed reference to authToken from Account

This was a race condition that could prevent
multiple devices from authenticating simultaneously.
AuthTokens are ephemeral and single-use so don't
need to be managed by the Account.
when uid is null, don't get account from kv
move keyfetchtoken to cache
account may be null on /account/keys
Merge pull request #174 from dannycoates/i174

Can KeyFetchTokens be ephemeral?
Merge pull request #164 from vladikoff/key-stretch-updates

Updating methods to use buffers, adding tests, addressing feedback
docs for configuring account bridge url
Merge pull request #181 from mozilla/ftu

docs for configuring account bridge url