"Managers & Factories" in Extending.md

finish traslation about "Managers & Factories"
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Session驱动的部分翻译

Session驱动的部分翻译
full version --unverified

full version --unverified
commplete edition < carefully checkd >

commplete edition < carefully checkd > by Jason.H
Merge pull request #11 from JasonHuangHuster/JasonHuang

Pull request for extending