Update README.md

Author: lminhtm

README.md

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 LMGaugeView
 ==============
 LMGaugeView is a simple and customizable gauge control for iOS inspired by [Flavor](https://dribbble.com/flavor) sketch on [Dribbble](https://dribbble.com/shots/1217274-Speedometer-Day-Night-Mode).
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-<img src="https://raw.github.com/lminhtm/LMGaugeView/master/Screenshots/screenshot2.png"/>
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+<img src="https://raw.github.com/lminhtm/LMGaugeView/master/Screenshots/image1.jpg" align="middle"/>
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+<img src="https://raw.github.com/lminhtm/LMGaugeView/master/Screenshots/screenshot1.png"/>
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 <img src="https://raw.github.com/lminhtm/LMGaugeView/master/Screenshots/screenshot3.gif"/>