Merge pull request #4648 from take-cheeze/patch-3

Use mruby-onig-regexp instead in example

build_config.rb

@@ -18,9 +18,9 @@ MRuby::Build.new do |conf|
   # end
   # conf.gem 'examples/mrbgems/c_and_ruby_extension_example'
   # conf.gem :core => 'mruby-eval'
-  # conf.gem :mgem => 'mruby-io'
-  # conf.gem :github => 'iij/mruby-io'
-  # conf.gem :git => 'git@github.com:iij/mruby-io.git', :branch => 'master', :options => '-v'
+  # conf.gem :mgem => 'mruby-onig-regexp'
+  # conf.gem :github => 'mattn/mruby-onig-regexp'
+  # conf.gem :git => 'git@github.com:mattn/mruby-onig-regexp.git', :branch => 'master', :options => '-v'
 
   # include the default GEMs
   conf.gembox 'default'