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Merge pull request #83 from pinguo-liuhongwei/Feature1

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Merge pull request #85 from pinguo-hehailin/Feature1

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Merge branch 'Feature1' of https://github.com/pinguo/lession2 into Feature1
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Merge branch 'Feature1' of https://github.com/pinguo/lession2 into Feature1
Merge pull request #87 from pinguo-shenqiang/master

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Merge branch 'Feature1' of https://github.com/pinguo/lession2 into Feature1
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