think I figured this out - need to exclude vendor folder in build

Author: vsoch

_config.yml

@@ -28,6 +28,7 @@ exclude:
   - .idea/
   - .gitignore
   - README.md
+  - vendor/
 
 # Optional Feedback Link in Header (disabled)
 feedback_subject_line: Singularity Feedback

circle.yml

@@ -14,5 +14,4 @@ general:
 
 test:
   post:
-    - rm -rf vendor/bundle/ruby/2.2.0/gems/jekyll-3.3.1/lib/site_template/
     - bundle exec jekyll build