Merged in #114.

pom.xml

@@ -78,6 +78,7 @@
         <logback.version>1.1.1</logback.version>
         <assertj.version>1.7.0</assertj.version>
         <thymeleaf.version>2.1.3.RELEASE</thymeleaf.version>
+        <json-simple.version>1.1.1</json-simple.version>
     </properties>
 
 	<build>
@@ -297,6 +298,11 @@
 			<artifactId>commons-configuration</artifactId>
 			<version>${commons.configuration.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>com.googlecode.json-simple</groupId>
+			<artifactId>json-simple</artifactId>
+			<version>${json-simple.version}</version>
+		</dependency>
 		<dependency>
 			<groupId>args4j</groupId>
 			<artifactId>args4j</artifactId>

src/main/java/org/jbake/app/Parser.java

@@ -5,6 +5,7 @@
 import org.jbake.parser.Engines;
 import org.jbake.parser.MarkupEngine;
 import org.jbake.parser.ParserContext;
+import org.json.simple.JSONValue;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -186,6 +187,9 @@ private void processHeader(List<String> contents, final Map<String, Object> cont
                         for( int i=0; i<tags.length; i++ )
                             tags[i]=tags[i].trim();
                         content.put(parts[0], tags);
+                    } else if (parts[1].startsWith("{") && parts[1].endsWith("}")) {
+                        // Json type
+                        content.put(parts[0], JSONValue.parse(parts[1]));
                     } else {
                         content.put(parts[0], parts[1]);
                     }

src/test/java/org/jbake/app/RendererTest.java

@@ -91,7 +91,8 @@ public void renderPost() throws Exception {
         	.contains("2013</p>")
         	.contains("Lorem ipsum dolor sit amet")
         	.contains("<h5>Published Posts</h5>")
-        	.contains("blog/2012/first-post.html");
+        	.contains("blog/2012/first-post.html")
+        	.contains("<meta property=\"og:description\" content=\"Something\"/>");
     }
 
     @Test

src/test/resources/content/blog/2013/second-post.html

@@ -3,6 +3,7 @@
 type=post
 tags=blog
 status=published
+og={"description": "Something"}
 ~~~~~~
 
 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque vel diam purus. Curabitur ut nisi lacus. 
@@ -12,4 +13,4 @@
 ligula vehicula et iaculis sem placerat. Fusce dictum, metus at volutpat lacinia, elit massa auctor risus, 
 id auctor arcu enim eu augue. Donec ultrices turpis in mi imperdiet ac venenatis sapien sodales. In 
 consequat imperdiet nunc quis bibendum. Nulla semper, erat quis ornare tristique, lectus massa posuere 
-libero, ut vehicula lectus nunc ut lorem. Aliquam erat volutpat.
+libero, ut vehicula lectus nunc ut lorem. Aliquam erat volutpat.

src/test/resources/templates/header.ftl

@@ -47,6 +47,9 @@
       }
     </style>
     <link href="/css/bootstrap-responsive.min.css" rel="stylesheet">
+    <#if content?? && content.og??>
+        <meta property="og:description" content="${content.og.description}"/>
+    </#if>
 
     <!-- HTML5 shim, for IE6-8 support of HTML5 elements -->
     <!--[if lt IE 9]>
@@ -74,4 +77,3 @@
       </div>
 
       <hr>
-