Switch to kramdown and remove github flavored markdown.

.yardopts

@@ -1,7 +1,7 @@
 --title 'Semver String'
 --output-dir docs
 --markup markdown
---markup-provider rdiscount
+--markup-provider kramdown
 --hide-api private
 --no-progress
 --plugin sitemap

Gemfile

@@ -14,6 +14,6 @@ group 'development' do
 end
 
 group 'documentation' do
-  gem 'rdiscount', '~> 2.2'
+  gem 'kramdown'
   gem 'yard', '~> 0.9'
 end

README.md

@@ -14,33 +14,33 @@ Semver String
 
 Add semver-string to your project's Gemfile and then bundle install.
 
-```ruby
+~~~
 gem 'semver-string', '~> 1'
-```
+~~~
 
 ## Basic Usage
 
 Begin by requiring the gem:
 
-```ruby
+~~~
 require 'semver/string'
-```
+~~~
 
 You can construct a `Semver::String` from a Ruby String:
 
-```ruby
+~~~
 version = Semver::String.parse('1.2.3-rc.1+build-123456789')
 
 version.major #=> 1
 version.minor #=> 2
 version.patch #=> 3
 version.pre_release #=> "rc.1"
 version.build_metadata #=> "build-123456789"
-```
+~~~
 
 You can also construct one from the semver components:
 
-```ruby
+~~~
 # only major, minor, and patch are required
 version = Semver::String.new(
   major: 1,
@@ -50,14 +50,14 @@ version = Semver::String.new(
   build_metadata: 'build-123456789')
 
 version.to_s #=> "1.2.3-rc.1+build-123456789"
-```
+~~~
 
 `Semver::String` objects can be compared and sorted. Sorting is done
 according to the rules defined at [semver.org](https://semver.org/).
 
-```
+~~~
 Semver::String.parse('1.10.0') < Semver::String.parse('1.2.0') #=> false
-```
+~~~
 
 ## License
 

lib/semver/string.rb

@@ -8,7 +8,7 @@
 module Semver
   # A helper class for working with semantic versioning strings.
   #
-  # ```ruby
+  # ~~~
   # version = Semver::String.new('1.2.3-alpha+build-123')
   #
   # version.major #=> 1
@@ -17,8 +17,7 @@ module Semver
   # version.pre_release #=> alpha
   # version.build_metadata #=> build-123
   # version.to_s #=> "1.2.3-alpha+build-123"
-  # ```
-  #
+  # ~~~
   class String
 
     # @param [String] string