Update project intro.js to v0.9.0

libgrabber updated project intro.js to v0.9.0.

@usablica

### Metadata information

```json
{
  "metadata": {
    "packageManager": "github",
    "name": "intro.js",
    "repo": "usablica/intro.js",
    "files": {
      "basePath": "minified/",
      "include": ["**/*"],
      "exclude": []
    },
    "path": "/home/jsdelivr/files/intro.js",
    "localVersions": ["0.5.0", "0.6.0"],
    "remoteVersions": ["v0.1.0", "v0.2.0", "v0.2.1", "v0.3.0", "v0.4.0", "v0.5.0", "v0.6.0", "v0.7.0", "v0.7.1", "v0.8.0", "v0.9.0"],
    "branchVersions": []
  },
  "version": "v0.9.0",
  "updated": true,
  "updatePath": "/home/jsdelivr/files/intro.js/0.9.0",
  "branch": "intro.js/v0.9.0"
}
```