Finish HackMyCore reshaping.

Reintroduce HackMyCore, dropping the interim submodule, and reorganize
and improve tests.

src/generators/json-yaml-generator.coffee

@@ -0,0 +1,30 @@
+###*
+Definition of the JsonYamlGenerator class.
+@module json-yaml-generator.js
+@license MIT. See LICENSE.md for details.
+###
+
+
+
+BaseGenerator = require('./base-generator')
+FS = require('fs')
+YAML = require('yamljs')
+
+
+
+###*
+JsonYamlGenerator takes a JSON resume object and translates it directly to
+JSON without a template, producing an equivalent YAML-formatted resume. See
+also YamlGenerator (yaml-generator.js).
+###
+
+JsonYamlGenerator = module.exports = BaseGenerator.extend
+
+  init: () -> @_super 'yml'
+
+  invoke: ( rez, themeMarkup, cssInfo, opts ) ->
+    YAML.stringify JSON.parse( rez.stringify() ), Infinity, 2
+
+  generate: ( rez, f, opts ) ->
+    data = YAML.stringify JSON.parse( rez.stringify() ), Infinity, 2
+    FS.writeFileSync f, data, 'utf8'