No config option to set crop button text

[lovelyelfpop]

com.theartofdev.edmodo:android-image-cropper:2.5.0+ support setting crop button title via builder api, please update this plugin

[krish-dev]

Currently, I'm too busy with another work. If you can fix this, sent me the PR. I will review and merge it.

[xudihui]

Fantastic，thanks for your plugin，I want to reset crop button, thank u very much!

[xudihui]

@lovelyelfpop 我看到你是中国人，我想跟你说一件事：开源项目的用户和维护者之间并不是甲方和乙方的关系，issue 也不是客服。在开 issue 的时候，我们应该抱着一种『一起合作来解决这个问题』的心态，不要期待作者单方面地为我们服务。

[lovelyelfpop]

@xudihui I said 'please'