README上没有找到注册插件的方法

[cjlcooper]

Describe the bug
A clear and concise description of what the bug is.

Log
There are two ways to get the running log of MTHawkeye:
A: Filter the Xcode Console log, they are start with [hawkeye]
B: Under the com.meitu.hawkeye folder in sandbox, the log was store as log.mtlog & log.mmap2

To Reproduce
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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Screenshots
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Environment (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Xcode Version: [e.g. 10.2]

Additional context
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[cjlcooper]

addDefaultUIClientMainPanelPluginsInto方法中mainPanelPlugins最终并没有使用到，不太明白怎么添加自定义的插件。

[cjlcooper]

添加插件方法在MTHawkeyeUIClient方法中，已找到。

[panmingyang2009]

OK