Add Badge for Maven CI Build

Author: kwin

README.md

@@ -1,3 +1,5 @@
+![Java CI](https://github.com/kwin/cppcheclipse/workflows/Java%20CI/badge.svg)
+
 cppcheclipse is an Eclipse plugin which integrates [cppcheck](http://sourceforge.net/projects/cppcheck/) with the [CDT project](https://eclipse.org/cdt/). You can run/configure cppcheck from the Eclipse UI.
 
 To build the project on the command line it requires maven, Run the following commands:
@@ -13,4 +15,4 @@ It will not increment the version number nor deploy/publish/release the artifact
 * Maven build will fail if Java 9 is used, while it will work under Java 8.
 
 
-Further information on how to use and install cppcheclipse can be found in the [wiki](https://github.com/kwin/cppcheclipse/wiki).
+Further information on how to use and install cppcheclipse can be found in the [wiki](https://github.com/kwin/cppcheclipse/wiki).