Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Update documentation."
  - Update documentation.

    - Breifly describe architecture
    - Describe launch/kill ssh-agent

    Change-Id: I9e4226c3de8935894564044e0ab8a723753ed9b3
    Signed-off-by: Taseer Ahmed <taseer94@gmail.com>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 00d8896..acd3778 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 00d8896a9b19ac063f31d117c0d04ccc542eeec4
+Subproject commit acd3778e3d3ede9828408b67adef374a76493238