fix(install): do not use globally installed typings in preinstall (#380)
fix(install): do not use globally installed typings in preinstall (#380)

right now there are an exception on trying to clean install universal with preboot depency

```bash
npm ERR! preboot@2.0.7 preinstall: `typings install`
npm ERR! spawn ENOENT
npm ERR! 
npm ERR! Failed at the preboot@2.0.7 preinstall script 'typings install'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the preboot package,
```
ufo-github/universal,angular/universal,manekinekko/universal,ufo-github/universal,angular/universal,angular/universal,angular/universal,manekinekko/universal,ufo-github/universal,jeffwhelpley/universal,jeffwhelpley/universal