Fix casing of JMemoryBuddy artifact in README

Author: FlorianKirmaier

README.md

@@ -15,7 +15,7 @@ The library is published at MavenCentral
 ```
 <dependency>
   <groupId>one.jpro</groupId>
-  <artifactId>JMemoryBuddy</artifactId>
+  <artifactId>jmemorybuddy</artifactId>
   <version>0.5.6</version>
   <scope>test</scope>
 </dependency>
@@ -24,7 +24,7 @@ The library is published at MavenCentral
 #### Gradle
 ```
 dependencies {
-    compile "one.jpro:JMemoryBuddy:0.5.6"
+    compile "one.jpro:jmemorybuddy:0.5.6"
 }
 ```