Allow choice between GitHub releases

This PR allows users to choose which asset to download in the event that there are multiple compiled assets available (as seen [here](https://github.com/rbray89/ActiveTextureManagement/releases)) asking them which to use when adding/updating instead of simply using the first.
I smell a C++ coder here.

Use a for-loop:
```
for (Element button : releseContainer.select("li a")){

}
```

Magic.