How to: Use a mirror of node binaries
To use a mirror of the node binaries, set `$NVM_NODEJS_ORG_MIRROR`:

```sh
export NVM_NODEJS_ORG_MIRROR=https://nodejs.org/dist
nvm install node

NVM_NODEJS_ORG_MIRROR=https://nodejs.org/dist nvm install 4.2
```

To use a mirror of the io.js binaries, set `$NVM_IOJS_ORG_MIRROR`:

```sh
export NVM_IOJS_ORG_MIRROR=https://iojs.org/dist
nvm install iojs-v1.0.3

NVM_IOJS_ORG_MIRROR=https://iojs.org/dist nvm install iojs-v1.0.3
```

`nvm use` will not, by default, create a "current" symlink. Set `$NVM_SYMLINK_CURRENT` to "true" to enable this behavior, which is sometimes useful for IDEs. Note that using `nvm` in multiple shell tabs with this environment variable enabled can cause race conditions.

#### Pass Authorization header to mirror
To pass an Authorization header through to the mirror url, set `$NVM_AUTH_HEADER`

```sh
NVM_AUTH_HEADER="Bearer secret-token" nvm install node
```