Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Add juyter-notebook for visualization"
  - Add juyter-notebook for visualization

    Change-Id: Ic6a8948a026b7456a90519ad665acb4efd6ace4f
    Signed-off-by: Taseer Ahmed <taseer94@gmail.com>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index d218f94..227544a 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit d218f94274ac94c36d2c843f73b83290f761a8f6
+Subproject commit 227544add9127684a9f950d22c9971b61a147391