Update readme

Author: cemremengu

README.md

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 # fastify-oracle
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+[![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com) [![Build Status](https://travis-ci.org/cemremengu/fastify-oracle.svg?branch=master)](https://travis-ci.org/cemremengu/fastify-oracle)
 
 This module provides access to an Oracle database connection pool via the
 [oracledb](https://npm.im/oracledb) module. It decorates the [Fastify](https://fastify.io)