Added 'load-grunt-config' plugin

The plugin replaces the custom 'loadConfig()' function with a more robust and extensible solution.

It handles 'grunt.initConfig()' and 'load-grunt-tasks'.

Changes:
- Moved Grunt task configurations into a 'config/' sub-directory to allow room for custom plugins, modules, and tasks to be defined without being included by the config-loader;
- Updated '.eslintrc' to better lint module-based JS;
- Updated EditorConfig recommendations;

build/grunt/config/browserSync.js

@@ -0,0 +1,18 @@
+module.exports = {
+	options: {
+		proxy     : 'localhost',
+		port      : 3000,
+		watchTask : true,
+		notify    : false
+	},
+	dev: {
+		bsFiles: {
+			src : [
+				'<%= paths.css.dist %>/**/*.css',
+				'<%= paths.js.dist %>/**/*.js',
+				'<%= paths.img.dist %>/**/*.svg',
+				'**/*.php'
+			]
+		}
+	}
+};