Updates .gitignore

Closes-Bug: #1255854

Change-Id: I22b6fa351dd5b654783f432c01785c706eff8397
diff --git a/.gitignore b/.gitignore
index a3d5b0d..49eb188 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 proto
 *~
-.*.sw[nop]
+.*.sw?
 *.log
 *.log.[1-9]
 src