Add readme parsing for extracting title and description

lib/parse/index.js

@@ -5,4 +5,5 @@ module.exports = {
     lex: require('./lex'),
     progress: require('./progress'),
     navigation: require('./navigation'),
+    readme: require('./readme')
 };

lib/parse/readme.js

@@ -0,0 +1,32 @@
+var _ = require('lodash');
+var marked = require('marked');
+
+function extractFirstNode(nodes, nType) {
+    return _.chain(nodes)
+    .filter(function(node) {
+        return node.type == nType;
+    })
+    .pluck("text")
+    .first()
+    .value();
+}
+
+
+function parseReadme(src) {
+    var nodes, title, description;
+
+    // Parse content
+    nodes = marked.lexer(src);
+    
+    var title = extractFirstNode(nodes, "heading");
+    var description = extractFirstNode(nodes, "paragraph");
+
+    return {
+        title: title,
+        description: description
+    };
+}
+
+
+// Exports
+module.exports = parseReadme;