primus module doesn't work because peerDependencies are unsupported?

The `primus` module doesn't work because it depends on `eventemitter3` and `asyncemit`, while the latter has a peer dependency on `eventemitter3`, which ied doesn't install in `asyncemit's` `node_modules/`.
- **Version**: `2.3.1`

To reproduce:

``` sh
npm init --yes
ied i primus --save
node -e "require('primus')"
```

``` sh
module.js:442
throw err;
^

Error: Cannot find module 'eventemitter3'
at Function.Module._resolveFilename (module.js:440:15)
at Function.Module._load (module.js:388:25)
at Module.require (module.js:468:17)
at require (internal/module.js:20:19)
at Object. (/home/u/ied-primus/node_modules/cc3e0fe0da39b53cc15e5b3aa8616ea6a72bd599/package/index.js:3:14)
at Module._compile (module.js:541:32)
at Object.Module._extensions..js (module.js:550:10)
at Module.load (module.js:458:32)
at tryModuleLoad (module.js:417:12)
at Function.Module._load (module.js:409:3)
```