[ruby/optparse] Moved rdoc files to doc/optparse

cccb28e0de

doc/optparse/ruby/proc.rb

@@ -0,0 +1,13 @@
+require 'optparse'
+parser = OptionParser.new
+parser.on(
+  '--xxx',
+  'Option with no argument',
+  ->(value) {p ['Handler proc for -xxx called with value:', value]}
+)
+parser.on(
+  '--yyy YYY',
+  'Option with required argument',
+  ->(value) {p ['Handler proc for -yyy called with value:', value]}
+)
+parser.parse!