def oauth_access_token_from_header
      auth_header = request.env['HTTP_AUTHORIZATION'] || ''
      match = auth_header.match(/^Bearer\s(.*)/)
      return match[1] if match.present?
      false
    end
def oauth_access_token_from_header
      auth_header = request.env['HTTP_AUTHORIZATION'] || ''
      match = auth_header.match(/^Bearer\s(.*)/)
      return match[1] if match.present?
      false
    end
grabs access_token from header if one is present