fix(activate): use logger for info printing

Author: dkundel

src/printers/activate.ts

@@ -1,5 +1,6 @@
 import { ActivateConfig } from '@twilio-labs/serverless-api';
 import { stripIndent } from 'common-tags';
+import { logger } from '../utils/logger';
 import { redactPartOfString } from './utils';
 import chalk = require('chalk');
 
@@ -8,5 +9,5 @@ export function printActivateConfig(config: ActivateConfig) {
     {cyan.bold Account} ${config.accountSid}
     {cyan.bold Token}   ${redactPartOfString(config.authToken)}
   `;
-  process.stderr.write(stripIndent(message) + '\n');
+  logger.info(stripIndent(message) + '\n');
 }