Documentation updates regarding using the precompiled Ruby converter

HACKING.adoc

@@ -102,6 +102,7 @@ done with `bundler`:
 
     bundle config --local github.https true
     bundle --path=.bundle/gems --binstubs=.bundle/.bin
+    bundle exec rake build
 
 Go to `test/output/slim/` folder and install `reveal.js`:
 
@@ -214,6 +215,25 @@ NOTE: The relative portion of the last command is where you are installing the l
 
 Then proceed as documented in the `README.adoc`.
 
+
+== RubyGem package
+
+=== Test a local asciidoctor-revealjs version
+
+Compile the converter:
+
+  $ bundle exec rake build
+
+In a clean directory besides the `asciidoctor-reveal.js` repository, create the following `Gemspec` file:
+
+  source 'https://rubygems.org'
+  gem 'asciidoctor-revealjs', :path => '../asciidoctor-reveal.js'
+
+Then run:
+
+  $ bundle --path=.bundle/gems --binstubs=.bundle/.bin
+
+
 == Release process
 
 . Update the version in `lib/asciidoctor-revealjs/version.rb` and `package.json`
@@ -231,6 +251,7 @@ Then proceed as documented in the `README.adoc`.
 . Make a release on github (from changelog and copy from previous releases)
 . Pushing the gem on rubygems.org:
 +
+ $ bundle exec rake build
  $ gem build asciidoctor-revealjs.gemspec
  $ gem push asciidoctor-revealjs-X.Y.Z.gem
 

README.adoc

@@ -82,7 +82,6 @@ NOTE: These instructions should be repeated for every presentation project.
 source 'https://rubygems.org'
 
 gem 'asciidoctor-revealjs' # latest released version
-#gem 'asciidoctor-revealjs', github: 'asciidoctor/asciidoctor-reveal.js' # github master branch
 ----
 +
 NOTE: For some reason, when you use the system Ruby on Fedora, you also have to add the json gem to the Gemfile.