index: add quiet mode

lib/index.js

@@ -28,7 +28,7 @@ export default class Now extends EventEmitter {
     this._onRetry = this._onRetry.bind(this);
   }
 
-  async create (path, { forceNew, forceSync }) {
+  async create (path, { forceNew, forceSync, quiet = false }) {
     this._path = path;
 
     try {
@@ -139,12 +139,13 @@ export default class Now extends EventEmitter {
       });
 
       if (sizeExceeded) {
-        console.log(`> \u001b[31mWarning!\u001b[39m ${sizeExceeded} of the files ` +
+        console.error(`> \u001b[31mWarning!\u001b[39m ${sizeExceeded} of the files ` +
           'exceeded the limit for your plan.\n' +
           `> See ${chalk.underline('https://zeit.co/account')} to upgrade.`);
       }
     }
 
+    if (!quiet) {
       if (engines && engines.node) {
         if (missingVersion) {
           console.log(`> Using Node.js ${chalk.bold(deployment.nodeVersion)} (default)`);
@@ -154,6 +155,7 @@ export default class Now extends EventEmitter {
       } else {
         console.log(`> Using Node.js ${chalk.bold(deployment.nodeVersion)} (default)`);
       }
+    }
 
     this._id = deployment.deploymentId;
     this._host = deployment.url;