Create phosphor-gpio-util framework

This application can write GPIOs.  Read support may
be added in the future.

Aside from just setting a GPIO low or high, it can
also do: 0 -> <delay> -> 1 or 1 -> <delay> -> 0.
All functionality will be added in future commits

Change-Id: I2d3c761eb909ddce3952bfb3173ce271f03544ba
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/.gitignore b/.gitignore
index e1a8926..50e667c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,14 +36,15 @@
 /texinfo.tex
 
 # Repo specific items
-/*.o
+*.o
 /config.h
 /config.h.in~
 /config.log
 /config.status
 /phosphor-gpio-monitor
-/Makefile
-/.deps
+Makefile
+.deps
 /*-libtool
 /test/.deps
 /test/Makefile
+phosphor-gpio-util