ignore generated files

BUG=chromium:660209
TEST=`git status` is clean

Change-Id: I94075da61c654bc1d6eb6c66df34cbc7eb5b4d54
Reviewed-on: https://chromium-review.googlesource.com/404029
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2b4130e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+*.[ado]
+*.depends
+
+/libdm-bht.so
+/verity
+/verity-static
+/verity_testrunner