update CHANGELOG

CHANGELOG.md

@@ -8,6 +8,10 @@ BREAKING CHANGES:
 
 FEATURES:
 
+  - **Vagrant Push**: Vagrant can now deploy! `vagrant push` is a single
+      command to deploy your application. Deploy to Heroku, FTP, or
+      HashiCorp's commercial product Atlas. New push strategies can be
+      added with plugins.
   - **Named provisioners**: Provisioners can now be named. This name is used
       for output as well as `--provision-with` for better control.
   - Default provider logic improved: Providers in `config.vm.provider` blocks