change (publisher) don't deploy erred model

Author: vengrov

lib/server-code/publisher.js

@@ -21,6 +21,10 @@ exports.publish = function(opts) {
     if (model.isEmpty() && !opts.allowEmpty) {
       throw new Error('Nothing to publish');
     }
+    
+    if (model.errors.length) {
+      throw new Error('Please resolve Model Errors before deploying to production');
+    }
   }
 
   function zip() {