yui/yui3 — pull request #134 by okuryu (2012-05-11 15:04:12+00:00)
Title: Remove specified OS within package.json

Currently, `yui` require `os` within `package.json`, but I think that we don't have any reason to require specified `os`.

What do you think?

```
$ uname -v
FreeBSD 8.1-RELEASE #0: Mon Jul 19 02:36:49 UTC 2010 root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
```

```
$ npm install yui
```

```
npm ERR! Unsupported
npm ERR! Not compatible with your operating system or architecture: yui@3.5.1
npm ERR! Valid OS: darwin,linux,win32
npm ERR! Valid Arch: any
npm ERR! Actual OS: freebsd
npm ERR! Actual Arch: x64
npm ERR!
npm ERR! System FreeBSD 8.1-RELEASE
npm ERR! command "node" "/usr/local/bin/npm" "install" "yui"
npm ERR! cwd /usr/home/okuryu/work
npm ERR! node -v v0.6.17
npm ERR! npm -v 1.1.21
npm ERR! code EBADPLATFORM
npm ERR! message Unsupported
npm ERR! errno {}
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! /usr/home/okuryu/work/npm-debug.log
npm not ok
```