- add netbeans folder to gitignore

.gitignore

@@ -60,4 +60,5 @@
 /sdk/jme3-wavefront/build/
 /sdk/jme3-vehicle-creator/build/
 /sdk/jme3-welcome-screen/build/
-/sdk/jme3-glsl-support/build/
+/sdk/jme3-glsl-support/build/
+/netbeans/