README.md in trice-0.3.0 vs README.md in trice-0.3.1

- old
+ new

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 # Trice
+[![Build Status](https://travis-ci.org/cookpad/trice.svg?branch=master)](https://travis-ci.org/cookpad/trice)
 
 Provides **reference time** concept to application. Use it instead of ad-hoc `Time.now`.
 
 ### Setting consistent reference time
 