Improve Underscore.js rendering support.

src/helpers/underscore-helpers.js

@@ -0,0 +1,34 @@
+/**
+Template helper definitions for Underscore.
+@license MIT. Copyright (c) 2016 hacksalot (https://github.com/hacksalot)
+@module handlebars-helpers.js
+*/
+
+
+(function() {
+
+  var HANDLEBARS = require('handlebars')
+  , _ = require('underscore')
+  , helpers = require('./generic-helpers');
+
+  /**
+  Register useful Underscore helpers.
+  @method registerHelpers
+  */
+  module.exports = function( theme, opts, cssInfo, ctx, eng ) {
+
+    helpers.theme = theme;
+    helpers.opts = opts;
+    helpers.cssInfo = cssInfo;
+    helpers.engine = eng;
+    ctx.h = helpers;
+
+    _.each( helpers, function( hVal, hKey ) {
+      if( _.isFunction( hVal )) {
+        _.bind( hVal, ctx );
+      }
+    }, this);
+
+  };
+
+}());