gitignore update

.gitignore

@@ -8,9 +8,12 @@ config/bookmarks.txt
 /scripts/templates_osl/
 /scripts/templates_py/
 /scripts/addons/
+/scripts/addons_contrib/
 *.spi1d
 *.pyc
 *.ocio
 *.spi3d
 *.py
 config/recent-files.txt
+scripts/addons_contrib/add_mesh_rocks/add_mesh_rocks.xml
+scripts/addons_contrib/online_mat_lib/material-library/bundled/cycles/wood/rough_pine.bcm