windows install

```
npm ERR! Windows_NT 6.1.7601
npm ERR! node v0.10.26
npm ERR! npm  v2.1.14
npm ERR! code ELIFECYCLE

npm ERR! bionode-sam@1.0.1 preinstall: `sam/build.sh`
npm ERR! Exit status 1
```

the binode installer should mention that you need to compile samtools BEFORE installing binode 
