no "postinstall", use "component-*" prefix on deps

Also removes the `npm` make rule.

Fixes hideous npm warnings like:

```
│   ├── props-component@1.0.3 (props) invalid (git://github.com/component/props#31ef4875f7cf38e9302fc263128cae19535b9bf9)
```
 and 

```
npm ERR! invalid: props-component@1.0.3 /Users/nrajlich/editor/node_modules/html-pipe/node_modules/dom-iterator/node_modules/props
```