soofani-THContactPicker 介绍
soofani-THContactPicker 是对
THContackPicker 的扩展，实现了联系人的多选支持，并对
UI 进行改进。
Details:
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Control Now loads contacts from address book after requesting permission.
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Added model class THContact
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Used custom cell view for easier UI customization.
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Added neat circular checkBox to the left side of the contact cell.
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Added circular contact images.
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Text filter field and table view resize using animation for smoother feel.
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Bar button on the top right is disabled by default and enabled when there is at least 1 contact selected.
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Keyboard is dismissed when tapping outside the filter text field.
