Add asciidoc primitives

Guardfile

@@ -0,0 +1,12 @@
+require 'asciidoctor'
+require 'erb'
+
+options = {:mkdirs => true, :safe => :unsafe, :attributes => 'linkcss'}
+
+guard 'shell' do
+  watch(/^[A-Za-z].*\.adoc$/) {|m|
+    Asciidoctor.load_file('src/main/asciidoc/README.adoc', :to_file => './README.adoc', safe: :safe, parse: false)
+    Asciidoctor.render_file('src/main/asciidoc/spring-cloud-build.adoc', options.merge(:to_dir => 'target/generated-docs'))
+    Asciidoctor.render_file('src/main/asciidoc/building.adoc', options.merge(:to_dir => 'target/generated-docs'))
+  }
+end