add .jar files to gitignore because of course

Signed-off-by: nickboldt <nboldt@redhat.com>
diff --git a/.gitignore b/.gitignore
index a1453d0..1e53b3a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,4 @@
 desktop.ini
 *.stackdump
 
+*.jar