See #1. Add example on native C++ bindings

.gitignore

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+
+build
+
 # Logs
 logs
 *.log

cpp-bindings/README.md

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+# C++ Modules in Node.js
+
+## Installation
+
+```bash
+npm install -g node-gyp
+```
+
+## Usage
+
+```bash
+node-gyp configure build
+```
+
+```bash
+node test.js
+```
+
+## Links
+- https://www.npmjs.org/package/node-gyp
+- http://nkzawa.tumblr.com/post/46089897239/how-to-write-native-node-addons
+- http://www.slideshare.net/nsm.nikhil/writing-native-bindings-to-nodejs-in-c
+- http://luismreis.github.io/node-bindings-guide/docs/returning.html
+

cpp-bindings/addon.cc

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+// hello.cc
+#include <node.h>
+#include <v8.h>
+
+using namespace v8;
+
+/**
+ * function Hello() {
+ *   var hello = 'hello ';
+ *   var arg = arguments[0];
+ *   return hello + arg;
+ * }
+ */
+Handle<Value> Hello(const Arguments& args) {
+  HandleScope scope;
+
+  Local<String> hello = String::New("hello ");
+  Local<String> arg = args[0]->ToString();
+  return scope.Close(String::Concat(hello, arg));
+}
+
+/**
+ * function Square() {
+ *  var a = arguments[0]
+ *  var sq = a * a;
+ *  return sq;
+ * }
+ */
+Handle<Value> Square(const Arguments& args) {
+ HandleScope scope;
+
+ int a = args[0]->Int32Value();
+ int sq = a * a;
+
+ return scope.Close(Integer::New(sq));
+}
+
+/**
+ * function Init(exports) {
+ *   var hello = Hello;
+ *   exports.hello = hello;
+ * }
+ */
+void Init(Handle<Object> exports) {
+  Local<Function> hello = FunctionTemplate::New(Hello)->GetFunction();
+  exports->Set(String::NewSymbol("hello"), hello);
+
+  Local<Function> square = FunctionTemplate::New(Square)->GetFunction();
+  exports->Set(String::NewSymbol("square"), square);
+}
+
+/** 
+ * NODE_MODULE is a macro defined at node.h
+ * first argument is module name (the file created at compile time)
+ */
+NODE_MODULE(addon, Init)
+

cpp-bindings/binding.gyp

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+{
+    'targets': [
+        {
+            'target_name': 'addon',
+            'sources': [ 'addon.cc' ]
+        }
+    ]
+}

cpp-bindings/test.js

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+// hello.js
+var addon = require('./build/Release/addon');
+console.log(addon.hello('world'));  // 'hello world'
+
+console.log('Square 5: '+addon.square(5));