Update README.md

Author: motianhuo

README.md

@@ -6,8 +6,11 @@ An Android library that help you to build app with swipe back gesture.
 Image
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   <img   src="http://ww3.sinaimg.cn/bmiddle/6705567egw1esyv3c1r6yj20m80zkq5c.jpg" />
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   <img   src="http://ww2.sinaimg.cn/bmiddle/6705567egw1esyv3if3rzj20m80zkwgg.jpg" />
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   <img   src="http://ww2.sinaimg.cn/bmiddle/6705567egw1esyv3ld96kj20m80zkjtk.jpg" />
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   <img   src="http://ww3.sinaimg.cn/bmiddle/6705567egw1esyv3c1r6yj20m80zkq5c.jpg" />
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