Rebuild examples when the sources change

tasks/install.js

@@ -1,17 +1,12 @@
 var async = require('async');
 
 var buildExt = require('./build-ext');
-var parseExamples = require('./parse-examples');
 
-/**
- * Parse examples and build external modules.
- */
-async.waterfall([
-  parseExamples,
-  buildExt
-], function(err) {
+buildExt(function(err) {
   if (err) {
     process.stderr.write(err + '\n');
     process.exit(1);
+  } else {
+    process.exit(0);
   }
 });