Add sitemap generation (#107)

Author: ratulm

Gemfile

@@ -25,3 +25,5 @@ gem "wdm", "~> 0.1.0" if Gem.win_platform?
 
 
 gem "webrick", "~> 1.7"
+
+gem 'jekyll-sitemap'

_config.yml

@@ -17,7 +17,7 @@ encoding: utf-8
 
 title: Batfish
 description: >- # this means to ignore newlines until "baseurl:"
-url: "https://batfish.github.io" # the base hostname & protocol for your site, e.g. http://example.com
+url: "https://batfish.org" # the base hostname & protocol for your site, e.g. http://example.com
 
 show_excerpts: true
 
@@ -39,6 +39,7 @@ safe: true
 
 plugins:
   - jekyll-feed
+  - jekyll-sitemap
 
 include:
   - _posts