Add .gitignore

Change-Id: I08e18183e2ddffaed7bfb7a2606581a8487a676f
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c8279f9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+buttons
+CMakeFiles
+CMakeCache.txt
+cmake_install.cmake
+Makefile
+inc/settings.hpp