Update .gitignore

Signed-off-by: Jens Georg <mail@jensge.org>
renderer-gst,playbin: Don't exit when playbin is missing

Signed-off-by: Jens Georg <mail@jensge.org>

https://bugzilla.gnome.org/show_bug.cgi?id=710443
renderer-gst: Deprecate Renderer.wrap constructor

Signed-off-by: Jens Georg <mail@jensge.org>