Change theme from 'cayman' to 'minima'

Author: asanka-code

_config.yml

@@ -31,7 +31,7 @@ twitter_username: jekyllrb
 github_username:  jekyll
 
 # Build settings
-# theme: cayman 
+theme: minima 
 remote_theme: pages-themes/cayman@v0.2.0
 plugins:
   - jekyll-remote-theme # add this line to the plugins list if you already have one