Fixed the compatibility with Ruby 3.1.

Author: dennisdoomen

Gemfile

@@ -1,2 +1,3 @@
 source 'https://rubygems.org'
-gem "github-pages", group: :jekyll_plugins	
+gem "github-pages", group: :jekyll_plugins	
+gem "webrick", "~> 1.7"

Gemfile.lock

@@ -23,6 +23,7 @@ GEM
       http_parser.rb (~> 0)
     ethon (0.15.0)
       ffi (>= 1.15.0)
+    eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
     execjs (2.8.1)
     faraday (1.9.3)
@@ -48,6 +49,7 @@ GEM
     faraday-patron (1.0.0)
     faraday-rack (1.0.0)
     faraday-retry (1.0.3)
+    ffi (1.15.5-x64-mingw-ucrt)
     ffi (1.15.5-x64-mingw32)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
@@ -229,6 +231,8 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.15.0)
     multipart-post (2.1.1)
+    nokogiri (1.10.10)
+      mini_portile2 (~> 2.4.0)
     nokogiri (1.10.10-x64-mingw32)
       mini_portile2 (~> 2.4.0)
     octokit (4.22.0)
@@ -266,14 +270,18 @@ GEM
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext
+    unf_ext (0.0.8)
     unf_ext (0.0.8-x64-mingw32)
     unicode-display_width (1.8.0)
+    webrick (1.7.0)
 
 PLATFORMS
+  x64-mingw-ucrt
   x64-mingw32
 
 DEPENDENCIES
   github-pages
+  webrick (~> 1.7)
 
 BUNDLED WITH
    2.3.6

README.md

@@ -13,16 +13,17 @@ See the landing page at https://www.csharpcodingguidelines.com
 
 ### Prerequisites
 
-* Ruby 2.4.x (note: 2.5 and higher may fail due to the `ffi` ruby lib only supporting < 2.5)
-* Ruby DevKit
-* The `bundler` gem (`gem install bundler`)
+* Ruby 3.1. (note: 2.5 and higher may fail due to the ffi ruby lib only supporting < 2.5).
+    * An easy way to install is to use `choco install ruby`.
+    * Or use the **Ruby+Devkit installer** from [RubyInstaller for Windows](https://rubyinstaller.org/downloads/archives/).
+* The `bundler` gem (`gem install bundler`). If you receive SSL-related errors while running gem install, try running `refreshenv` first.
 
 ### Building
 
 * Clone this repository
-* `cd` into the root of the repository
+* Install the Ruby Devkit using `ridk install` followed by option 3.
 * Run `bundle install`
-* Run `bundle exec jekyll serve`
+* Run `bundle exec jekyll serve`. To have it monitor your working directory for changes, add the `--incremental` option.
 
 ### Troubleshooting