Add warnings for unfound node version match

lib/index.js

@@ -115,8 +115,9 @@ export default class Now extends EventEmitter {
     // we report about files whose sizes are too big
     if (deployment.warnings) {
       let sizeExceeded = 0;
-      deployment.warnings.forEach(({ reason, sha, limit }) => {
-        if ('size_limit_exceeded' === reason) {
+      deployment.warnings.forEach((warning) => {
+        if ('size_limit_exceeded' === warning.reason) {
+          const { sha, limit } = warning;
           const name = hashes.get(sha).names.pop();
           console.error('> \u001b[31mWarning!\u001b[39m Skipping file %s (size exceeded %s)',
             name,
@@ -124,6 +125,12 @@ export default class Now extends EventEmitter {
           );
           hashes.get(sha).names.unshift(name); // move name (hack, if duplicate matches we report them in order)
           sizeExceeded++;
+        } else if ('node_version_not_found' === warning.reason) {
+          const { wanted, used } = warning;
+          console.error('> \u001b[31mWarning!\u001b[39m Requested node version %s is not available, using default version %s',
+            wanted,
+            used
+          );
         }
       });