Add bin and edit workflow

bin/gems/yell-2.2.2/examples/002.3-log-level-within-range.rb

@@ -0,0 +1,30 @@
+# encoding: utf-8
+
+require_relative '../lib/yell'
+
+puts <<-EOS
+
+# Additionally to writing only on specific levels, you may pass a range to 
+# the :level option:
+# * %i[] is a built-in for an array of symbols
+
+
+logger = Yell.new STDOUT, level: (:debug..:warn)
+
+%i[debug info warn error fatal].each do |level| 
+  logger.send( level, level )
+end
+#=> "2012-02-29T09:30:00+01:00 [DEBUG] 65784 : debug"
+#=> "2012-02-29T09:30:00+01:00 [ INFO] 65784 : info"
+#=> "2012-02-29T09:30:00+01:00 [ WARN] 65784 : warn"
+
+
+EOS
+
+puts "=== actual example ==="
+logger = Yell.new STDOUT, level: (:debug..:warn)
+
+%i[debug info warn error fatal].each do |level| 
+  logger.send( level, level )
+end
+