gitignore: ignore editor swp files

Change-Id: I3785c010e695f138f7f6ef981410815fc45a4b83
Reviewed-on: https://chromium-review.googlesource.com/c/1286256
Reviewed-by: Vitaliy Shipitsyn <[email protected]>
Tested-by: Mike Frysinger <[email protected]>

Author: vapier

.gitignore

@@ -1,7 +1,9 @@
+# Various temp files.
 *~
 \#*
 .#*
 __pycache__/
+*.swp
 
 # Stuff we build for distribution
 dist