Use Apache Ignite logo with registered trade mark symbol in README.md
# Apache Ignite
-<a href="https://ignite.apache.org/"><img src="https://github.com/apache/ignite-website/blob/master/images/Ignite_tm_Logo_black_RGB.svg" hspace="20"/></a>
+<a href="https://ignite.apache.org/"><img src="https://github.com/apache/ignite-website/blob/master/images/ignite_logo_full.svg" hspace="20"/></a>
<a href="https://ci.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_RunAll&branch_IgniteTests24Java8=%3Cdefault%3E"><img src="https://ci.ignite.apache.org/app/rest/builds/buildType:(id:IgniteTests24Java8_RunAll)/statusIcon.svg"/></a>
[![Build Status](https://travis-ci.org/apache/ignite.svg?branch=master)](https://travis-ci.org/apache/ignite)
