Update readme

Author: arakelian

README.md

@@ -102,7 +102,7 @@ Add the following to your `pom.xml`:
 <dependency>
     <groupId>com.arakelian</groupId>
     <artifactId>docker-junit-rule</artifactId>
-    <version>4.0.5</version>
+    <version>4.0.7</version>
     <scope>test</scope>
 </dependency>
 ```
@@ -117,7 +117,7 @@ repositories {
 }
 
 dependencies {
-  testCompile 'com.arakelian:docker-junit-rule:4.0.5'
+  testCompile 'com.arakelian:docker-junit-rule:4.0.7'
 }
 ```