Logo and ReadMe updates

README.md

@@ -4,13 +4,15 @@
 [![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://github.com/stklcode/jvaultconnector/blob/master/LICENSE.txt) 
 [![Maven Central](https://img.shields.io/maven-central/v/de.stklcode.jvault/connector.svg)](https://search.maven.org/#search%7Cga%7C1%7Cg%3A%22de.stklcode.jvault%22%20AND%20a%3A%22connector%22)
 
+![Logo](https://raw.githubusercontent.com/stklcode/jvaultconnector/master/assets/logo.svg)
+
 Java Vault Connector is a connector library for [Vault](https://www.vaultproject.io) by [Hashicorp](https://www.hashicorp.com) written in Java. The connector allows simple usage of Vault's secret store in own applications.
 
 ## Features:
 
 * HTTP(S) backend connector
     *  Ability to provide or enforce custom CA certificate
-* Authorization methods:
+* Authorization methods
     * Token
     * Username/Password
     * AppID (register and authenticate) [_deprecated_]
@@ -26,7 +28,7 @@ Java Vault Connector is a connector library for [Vault](https://www.vaultproject
     * Renew/revoke leases
     * Raw secret content or JSON decoding
 * Connector Factory with builder pattern
-* Tested against Vault 0.6.5
+* Tested against Vault 0.7.0
 
 
 ## Maven Artifact
@@ -34,7 +36,7 @@ Java Vault Connector is a connector library for [Vault](https://www.vaultproject
 <dependency>
     <groupId>de.stklcode.jvault</groupId>
     <artifactId>connector</artifactId>
-    <version>0.4.1</version>
+    <version>0.5.0</version>
 </dependency>
 ```