Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Demo script to show how to use the library.

    Change-Id: Ibe491b6e0f64aa751baf4006d6e3df1e571961d8
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 5f3fe68..ac477c0 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 5f3fe6856f07bd1289bac532264eccf6cba68d77
+Subproject commit ac477c0f04bfdc0796baf630b66cd8c2a370710b