Gracefully handle multiple untar.on('end', ...) event

Author: robertdimarco

lib/app.js

@@ -246,10 +246,17 @@ module.exports = {
                         'template');
           process.exit(1);
         }
+
+        var caughtFinishedEvent = false;
         untar.on('end', function() {
+          if (caughtFinishedEvent) return;
+          caughtFinishedEvent = true;
+
           try {
             fs.renameSync(tempDir + templateRoot, projectDir);
-            rimraf.sync(tempDir);
+            if (fs.existsSync(tempDir)) {
+              rimraf.sync(tempDir);
+            }
           } catch (err) {
             console.log(chalk.red('Installation Error') + ' - Couldn\'t relocate project assets');
             process.exit(1);