Merge pull request googlemaps#374 from apjanke/javadoc-v0.2.4-link

Update Javadoc link for v0.2.4

Author: domesticmouse

README.md

@@ -126,7 +126,7 @@ Maven Central](https://search.maven.org/#search%7Cga%7C1%7Ca%3A%22google-maps-se
 
 ## Developer Documentation
 
-View the [javadoc](https://googlemaps.github.io/google-maps-services-java/v0.2.3/javadoc/).
+View the [javadoc](https://googlemaps.github.io/google-maps-services-java/v0.2.4/javadoc/).
 
 Additional documentation for the included web services is available at
 https://developers.google.com/maps/.