Adding `homepage` and repo values to package.json

Note, still doesn't pass http://package-json-validator.com/ validator:
```json
{
  "valid": false,
  "errors": [
    "Type for field license, was expected to be string, not object"
  ],
  "warnings": [
    "Missing recommended field: contributors"
  ]
}
```

The solution to that is to use `licenses` and wrap it in an array:
```json
  "licenses": [{
    "type": "MIT",
    "url": "https://github.com/jonschlinkert/normalize-pkg/blob/master/LICENSE-MIT"
  }],
```