Support frontmatter for options

examples/frontmatter.md

@@ -0,0 +1,25 @@
+---
+title: Basic Example
+author:
+  name: Jordan Scales
+  twitter: jdan
+  url: http://jordanscales.com
+output: frontmatter.html
+---
+
+--
+
+# Cleaver 101
+## A first look at quick HTML presentations
+
+-- bg blink
+
+### A textual example
+
+Content can be written in **Markdown!** New lines no longer need two angle brackets.
+
+This will be in a separate paragraph.
+
+<img src="https://github.global.ssl.fastly.net/images/modules/logos_page/GitHub-Logo.png" width="50%">
+
+[Here's a link](http://google.com).

lib/index.js

@@ -296,7 +296,7 @@ Cleaver.prototype.renderAuthorSlide = function (content) {
  * @return {Array.<string>} A list of all slides
  */
 Cleaver.prototype.slice = function(document) {
-  var cuts = document.split(/\n(?=\-\-)/);
+  var cuts = document.split(/\n(?=\-\-[^-])/);
   var slices = [];
   var nlIndex;
 
@@ -307,9 +307,9 @@ Cleaver.prototype.slice = function(document) {
      *
      * Otherwise, we slice off the `--` at the beginning.
      */
-    if (!cuts[i].match(/^--/)) {
+    if (!cuts[i].match(/^--[^-]/)) {
       slices.push({
-        content: cuts[i].trim()
+        content: this.unwrapFrontmatter(cuts[i])
       });
 
       continue;
@@ -342,6 +342,15 @@ Cleaver.prototype.slice = function(document) {
   return slices;
 };
 
+/**
+ * Strips frontmatter tags (---) around YAML. 
+ *
+ * @param {string} A slide content
+ * @return {string} A slide content without frontmatter tags
+ */
+Cleaver.prototype.unwrapFrontmatter = function(content) {
+  return content.trim().replace(/^---\n/, '').replace(/\n---$/, '');
+};
 
 /**
  * Method to run the whole show.