[PATCH docs] Update dbus-interfaces.md

[OpenBMC Patches]

From: Chris Austen <causten at users.noreply.github.com>

---
 dbus-interfaces.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/dbus-interfaces.md b/dbus-interfaces.md
index be9943a..ca90f05 100644
--- a/dbus-interfaces.md
+++ b/dbus-interfaces.md
@@ -14,3 +14,11 @@ methods:
   *  `setAttention()`
 
  
+# Useful dbus cli tools
+
+## 'busctl'  -  http://www.freedesktop.org/software/systemd/man/busctl.html
+Great tool to issue rest commands via cli.  That way you don't have to wait for the code to hit the path on the system.  Great for running commands with QEMU too!
+
+busctl call \<path\> \<interface\> \<object\> \<method\> \<parameters\> 
+
+* \<parameters\> example : sssay "t1" "t2" "t3" 2 2 3
-- 
2.6.0