yamltools is yaml object data viewer and converter

	XML <-> YAML <-> JSON
	         ^
	         v
	      MessagePack

e.g.)
	# cat example.yaml
	foo:
	  - bar: 123
	  - baz: 456

	# yaml example.yaml
	$VAR1 = {
	          'foo' => [
	                   {
	                     'bar' => 123
	                   },
	                   {
	                     'baz' => 456
	                   }
	                 ]
	        };

	# yaml2json example.yaml
	{"foo":[{"bar":"123"},{"baz":"456"}]}

	# yaml2json example.yaml | json2yaml | yaml2json | json2yaml
	---
	foo:
	- bar: '123'
	- baz: '456'

	# yaml2sh example.yaml
	foo_0_bar="123"
	foo_1_baz="456"
	# eval `yaml2sh example.yaml`