Toast支持更多图标

[MorningK]

options字段新增type字段，支持'success' | 'warning' | 'error'| 'none'四种类型，默认为success

[tencent-adm]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[BearJ]

您好，您的邮件已收到，我会尽快回复您的，谢谢。

[qmjy]

什么时候合入啊？