Add maven dependency details to README

Author: Jonahss

README.md

@@ -5,7 +5,17 @@ Java language binding for writing Appium Tests, conforms to [Mobile JSON Wire Pr
 
 Depends upon the Selenium Java client library, available [here](http://docs.seleniumhq.org/download/)
 
-In the process of hosting on the Maven Central Repository, for now you can find the compiled jar in out/artifacts/java_client
+Hosted in Maven Central Repository:
+
+```
+<dependency>
+  <groupId>io.appium</groupId>
+  <artifactId>java-client</artifactId>
+  <version>1.0</version>
+</dependency>
+```
+
+Or, the compiled jar can be found in out/artifacts/java_client
 
 ###Added functions###
 More can be found in the docs, but here's a quick list of features which this project has added to the usual selenium binding.