Add in jekyll sitemap generation

Author: sahil-kale

Gemfile

@@ -31,3 +31,4 @@ gem "wdm", "~> 0.1", :platforms => [:mingw, :x64_mingw, :mswin]
 # Lock `http_parser.rb` gem to `v0.6.x` on JRuby builds since newer versions of the gem
 # do not have a Java counterpart.
 gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]
+gem 'jekyll-sitemap'

Gemfile.lock

@@ -65,6 +65,8 @@ GEM
       sass-embedded (~> 1.54)
     jekyll-seo-tag (2.8.0)
       jekyll (>= 3.8, < 5.0)
+    jekyll-sitemap (1.4.0)
+      jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     kramdown (2.5.1)
@@ -159,6 +161,7 @@ DEPENDENCIES
   http_parser.rb (~> 0.6.0)
   jekyll (~> 4.3.4)
   jekyll-feed (~> 0.12)
+  jekyll-sitemap
   minima (~> 2.5)
   tzinfo (>= 1, < 3)
   tzinfo-data

_config.yml

@@ -30,6 +30,7 @@ github_username:  circuits-and-code
 theme: minima
 plugins:
   - jekyll-feed
+  - jekyll-sitemap
 
 # Exclude from processing.
 # The following items will not be processed, by default.