@@ -1,6 +1,6 @@
-## QuantLib Async Bindings for Node.js [![npm version](https://badge.fury.io/js/quantlib.svg)](http://badge.fury.io/js/quantlib)
+## QuantLib Async Bindings for Node.js [![npm version](https://badge.fury.io/js/quantlib.svg)](http://badge.fury.io/js/quantlib) [![Twitter Follow](https://img.shields.io/twitter/follow/quantlibnode.svg?style=social&maxAge=3600)](https://twitter.com/quantlibnode)
 
-This project brings [QuantLib](http://quantlib.org/) to the Node.js community, it's similar to [QuantLibXL](http://quantlib.org/quantlibxl/) project which is for Microsoft Excel.
+This [open source project](https://github.com/quantlibnode/quantlibnode) brings [QuantLib](http://quantlib.org/) to the Node.js community, it's similar to [QuantLibXL](http://quantlib.org/quantlibxl/) project which is for Microsoft Excel.
 
 Most functions in QuantLibXL can be used in the similar way in Node on the server side.
 
@@ -13,13 +13,17 @@ All functions in this project are Async, they are exported to [Promise](https://
 npm install quantlib
 ```
 
-* Windows
+* Windows - 32-Bit
 
 `npm install quantlib` will do everything, including the node package installation and pre-built native addon (no dependency) download, you can start use it right away.
 
+* Windows - 64-Bit
+
+I will try to build and upload the pre-built addon, before that, Please refer to [how to build](#building_the_native_addon) below
+
 * Linux & Mac
 
-Quantlib and QuantLibAddin must be built first, then build QuantLibNode linking to them, pre-built native code is not provided for now
+Please refer to [how to build](#building_the_native_addon) below
 
 
 ## QuantLib Documents
@@ -34,6 +38,34 @@ Quantlib and QuantLibAddin must be built first, then build QuantLibNode linking
 | -------- | ------------- | ------- | ------------- |
 |    1.7.1 |         1.7.0 |   6.9.1 |         0.1.x |
 
+## Building the native addon
+
+#### Prerequisite
+
+* CMake 2.8 or above, Visual C++ for windows, Xcode for Mac, GCC for Linux
+* Node.js according to [version matrix](#version-matrix)
+* [nan](https://github.com/nodejs/nan) ^2.2.0
+* [node-gyp](https://github.com/nodejs/node-gyp) ~3.0.3
+* QuantLib, QuantLibAddin, ObjectHandler source code according to [version matrix](#version-matrix), they need to be put in the same directory
+* `boost` - which is required to build QuantLib
+
+#### Set environment variable
+
+please refer to `cmake/*.cmake` and `CMakeList.txt` files
+
+* `NAN_DIR` - location of `nan`
+* `NODE_GYP_DIR` - location of `.node-gyp` generated by `node-gyp` tool, which is at `~/.node-gyp`, if it doesn't exist, follow the instruction in [node-gyp](https://github.com/nodejs/node-gyp), and build a helloword program, it will generate the `.node-gyp` directory
+* `QUANTLIB_ROOT` - location of QuantLib, QuantLibAddin, ObjectHandler source code
+* `BOOST_ROOT` - location `boost` installed
+
+#### Use cmake to build the addon
+
+1. Build QuantLib and QuantLibAddin, please check `CMakeList.txt` for library name, and make sure generated library names are the same in `CMakeList.txt`
+2. from `quantlibnode` root directory `cd build`
+3. `cmake ..` for Windows and Linux, `cmake -G Xcode ..` for Mac OS X
+4. `cmake --build . --config Release`
+5. For Linux, you may need to put `quantlib.node` under `build/Release` manually,
+
 ## Example
 
 ```js