docs: use => using

docs/tutorial/using-native-node-modules.md

@@ -0,0 +1,71 @@
+# Usng native Node modules
+
+The native Node modules are supported by atom-shell, but since atom-shell is
+using a different V8 version from official Node, you need to use `apm` instead
+of `npm` to install Node modules.
+
+The usage of [apm](https://github.com/atom/apm) is quite similar to `npm`, to
+install dependencies from `package.json` of current project, just do:
+
+```bash
+$ cd /path/to/atom-shell/project/
+$ apm install .
+```
+
+But you should notice that `apm install module` won't work because it will
+install a user package for [Atom Editor](https://github.com/atom/atom) instead.
+
+## Which version of apm to use
+
+Generally using the latest release of `apm` for latest atom-shell always works,
+but if you are uncertain of the which version of `apm` to use, you may manually
+instruct `apm` to use headers of a specified version of atom-shell by setting
+the `ATOM_NODE_VERSION` environment.
+
+For example force installing modules for atom-shell v0.16.0:
+
+```bash
+$ export ATOM_NODE_VERSION=0.16.0
+$ apm install .
+```
+
+## Native Node module compatibility
+
+Since Node v0.11.x there were vital changes in the V8 API. So generally all
+native modules written for Node v0.10.x wouldn't work for Node v0.11.x. And
+because atom-shell internally uses Node v0.11.13, it carries with the same
+problem.
+
+To solve this, you should use modules that support Node v0.11.x,
+[many modules](https://www.npmjs.org/browse/depended/nan) do support both now.
+For old modules that only support Node v0.10.x, you should use the
+[nan](https://github.com/rvagg/nan) module to port it to v0.11.x.
+
+## Other ways of installing native modules
+
+Apart from `apm`, you can also use `node-gyp` and `npm` to manually build the
+native modules.
+
+### The node-gyp way
+
+To build Node modules with headers of atom-shell, you need to tell `node-gyp`
+where to download headers and which version to use:
+
+```bash
+$ cd /path-to-module/
+$ HOME=~/.atom-shell-gyp node-gyp rebuild --target=0.16.0 --arch=ia32 --dist-url=https://gh-contractor-zcbenz.s3.amazonaws.com/atom-shell/dist
+```
+
+The `HOME=~/.atom-shell-gyp` changes where to find development headers. The
+`--target=0.16.0` is version of atom-shell. The `--dist-url=...` specifies
+where to download the headers. The `--arch=ia32` says the module is built for
+32bit system.
+
+### The npm way
+
+```bash
+export npm_config_disturl=https://gh-contractor-zcbenz.s3.amazonaws.com/atom-shell/dist
+export npm_config_target=0.6.0
+export npm_config_arch=ia32
+HOME=~/.atom-shell-gyp npm install module-name
+```