Add "Release flow" to README.rdoc

README.rdoc

@@ -57,6 +57,14 @@
   For details of Racc, see HTML documents placed under 'doc/en/'
   and sample grammar files under 'sample/'.
 
+== Release flow
+
+* Update VERSION number of these files
+  * <code>RACC_VERSION</code> in "ext/racc/com/headius/racc/Cparse.java"
+  * <code>RACC_VERSION</code> in "ext/racc/cparse/cparse.c"
+  * <code>VERSION</code> in "lib/racc/info.rb"
+* Release as a gem by <code>rake release</code> with CRuby and JRuby because Racc gem provides 2 packages
+* Create new release on {GitHub}[https://github.com/ruby/racc/releases]
 
 == License