Update dependencies

marked 0.3.6 has a security vulnerability, so using this
opportunity to update other things, as well.

Author: noonat

.gitignore

@@ -1,4 +1,4 @@
 .DS_Store
-docs/intersect.html
+docs/src/intersect.ts.html
 node_modules
 

build.js

@@ -13,7 +13,7 @@ execFile('docco', [
     console.log('docco stderr:', stderr);
     throw err;
   }
-  rename('docs/intersect.ts.html', 'index.html', (err) => {
+  rename('docs/src/intersect.ts.html', 'index.html', (err) => {
     if (err) {
       throw err;
     }