add badges to readme

Author: argayash

README.md

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-[![Build Status](https://travis-ci.org/FriendsOfDoctrine/dbal-clickhouse.svg?branch=travisCI)](https://travis-ci.org/FriendsOfDoctrine/dbal-clickhouse)
+[![Build Status](https://travis-ci.org/FriendsOfDoctrine/dbal-clickhouse.svg?branch=master)](https://travis-ci.org/FriendsOfDoctrine/dbal-clickhouse)
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 # Doctrine DBAL ClickHouse Driver
 
 Doctrine DBAL driver for ClickHouse -- an open-source column-oriented database management system by Yandex (https://clickhouse.yandex/)