Finish HackMyCore reshaping.

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

src/core/jrs-theme.coffee

@@ -0,0 +1,87 @@
+###*
+Definition of the JRSTheme class.
+@module core/jrs-theme
+@license MIT. See LICENSE.MD for details.
+###
+
+
+
+_ = require 'underscore'
+PATH = require 'path'
+parsePath = require 'parse-filepath'
+pathExists = require('path-exists').sync
+
+
+
+###*
+The JRSTheme class is a representation of a JSON Resume theme asset.
+@class JRSTheme
+###
+class JRSTheme
+
+
+###*
+Open and parse the specified theme.
+@method open
+###
+open: ( thFolder ) ->
+
+  @folder = thFolder
+
+  # Open the [theme-name].json file; should have the same
+  # name as folder
+  pathInfo = parsePath thFolder
+
+  # Open and parse the theme's package.json file.
+  pkgJsonPath = PATH.join thFolder, 'package.json'
+  if pathExists pkgJsonPath
+    thApi = require thFolder
+    thPkg = require pkgJsonPath
+    this.name = thPkg.name
+    this.render = (thApi && thApi.render) || undefined
+    this.engine = 'jrs'
+
+    # Create theme formats (HTML and PDF). Just add the bare minimum mix of
+    # properties necessary to allow JSON Resume themes to share a rendering
+    # path with FRESH themes.
+    this.formats =
+      html:
+        outFormat: 'html'
+        files: [{
+          action: 'transform',
+          render: this.render,
+          major: true,
+          ext: 'html',
+          css: null
+        }]
+      pdf:
+        outFormat: 'pdf'
+        files: [{
+          action: 'transform',
+          render: this.render,
+          major: true,
+          ext: 'pdf',
+          css: null
+        }]
+  else
+    throw { fluenterror: HACKMYSTATUS.missingPackageJSON };
+  @
+
+
+
+###*
+Determine if the theme supports the output format.
+@method hasFormat
+###
+hasFormat: ( fmt ) ->  _.has this.formats, fmt
+
+
+
+###*
+Return the requested output format.
+@method getFormat
+###
+getFormat = ( fmt ) -> @formats[ fmt ]
+
+
+module.exports = JRSTheme;