Exclude vendor folder from jekyll build
diff --git a/site/_config.yml b/site/_config.yml
index 1527570..2b90427 100644
--- a/site/_config.yml
+++ b/site/_config.yml
@@ -25,7 +25,7 @@
 
 repository: https://github.com/apache/incubator-toree-website
 destination: target
-exclude: [README.md,Gemfile*]
+exclude: [README.md,Gemfile*,vendor]
 keep_files: [".git", ".svn", "apidocs"]
 
 # The base path where the website is deployed