Merge pull request #5 from sangam14/dependabot/bundler/docs/kramdown-2.3.1

Bump kramdown from 1.17.0 to 2.3.1 in /docs

Author: sangam14

docs/Gemfile.lock

@@ -33,7 +33,8 @@ GEM
  sass (~> 3.4)
  jekyll-watch (2.1.2)
  listen (~> 3.0)
- kramdown (1.17.0)
+ kramdown (2.3.1)
+ rexml
  liquid (4.0.1)
  listen (3.1.5)
  rb-fsevent (~> 0.9, >= 0.9.4)
@@ -48,6 +49,7 @@ GEM
  rb-fsevent (0.10.3)
  rb-inotify (0.9.10)
  ffi (>= 0.5.0, < 2)
+ rexml (3.2.5)
  rouge (3.3.0)
  ruby_dep (1.5.0)
  safe_yaml (1.0.4)