add travis image

Author: yibinlin

README.md

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 # Word2vecJava
 
+[![Build Status](https://travis-ci.org/medallia/Word2VecJava.svg?branch=master)](https://travis-ci.org/medallia/Word2VecJava)
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 This is a port of the open source C implementation of word2vec (https://code.google.com/p/word2vec/)
 
 For more background information about word2vec and neural network training for the vector representation of words, please see the following papers.