Alignment

Bring back the alignment of tags.

``` swift
tagListView.alignment = .Center // possible values are .Left, .Center, and .Right
tagListView.alignment = UIFont.systemFont(ofSize: 15)
tagListView.alignment.shadowRadius = 2
tagListView.alignment.shadowOpacity = 0.4
tagListView.alignment.shadowColor = UIColor.black
tagListView.alignment.shadowOffset = CGSize(width: 1, height: 1)
```