添加jarslink-springmvc的使用说明，修改springmvc依赖为必需，修改servlet的依赖为test

[liangruisen]

Support for 1.7.0.20180401，Fix #64

[coveralls]

Pull Request Test Coverage Report for Build 126

• 0 of 0 (NaN%) changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 90.683%

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Totals
Change from base Build 125:	0.0%
Covered Lines:	584
Relevant Lines:	644

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💛 - Coveralls

[JoeKerouac]

springMVC依赖已经帮你修正过了，下次记得提交前先更新一下保持与服务器的同步，不然有冲突的话在这儿合并很麻烦的：)