gitignore: add deps to ignore file

Signed-off-by: Sean Cross <sean@xobs.io>

.gitignore

diff --git a/.gitignore b/.gitignore
index 5b0a9df..ccf02a7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,11 @@
 *.lst
 *.vcd
 *.gtkw
+/deps/
+
+# vim swapfiles
+*.swp
+*.swo
 
 # These all seem to be generated by the build, and can probably be ignored
 # unless a release is generated