AttributeError: 'module' object has no attribute 'anomaly_detector'

I am running in Ubuntu with Python 2.7.

First I did:
`pip install luminol`
Then:
`import luminol`
`detector = luminol.anomaly_detector.AnomalyDetector(ts)`

This returns:
`AttributeError: 'module' object has no attribute 'anomaly_detector' `

Start by reproducing the reported Python 2.7 installation and import sequence using `pip install luminol`, `import luminol`, and `luminol.anomaly_detector.AnomalyDetector(ts)`. Inspect how the installed package exposes `anomaly_detector`; done means the documented import and detector construction no longer raise this AttributeError, with a regression test if the project’s test layout supports one.

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