message: include public_keys in authResponse
diff: @@ -72,6 +72,7 @@ export function makeAuthResponse(privateKey, profile={}, username=null,
  exp: Math.floor(expiresAt/1000), // JWT times are in seconds
  iss: makeDIDFromAddress(address),
  private_key: appPrivateKey,
  + public_keys: [publicKey],
  profile: profile,
  username: username,
  core_token: coreToken
  