Cannot read property 'split' of undefined
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### Description

When I clone repo from GitHub and use Kactus to open it, shows the **Cannot read property 'split' of undefined** alert.

### Version

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**Kactus version:** 0.2.4

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**OS version:** 10.12.6 (16G29)

### Steps to Reproduce

1. Clone Repository from GitHub in Kactus
1. Create a Sketch file in Kactus
1. Kactus shows the **ERROR ALERT**

![2017-08-21 5 48 03](https://user-images.githubusercontent.com/8208675/29514112-eef3b0c2-8699-11e7-8a3d-72fcb8b4b2af.png)


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### Logs

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