Merge pull request #8 from kisielk/patch-1

Fix escaping of quotes
diff --git a/helpers.go b/helpers.go
index 4ceb896..1460626 100644
--- a/helpers.go
+++ b/helpers.go
@@ -117,7 +117,7 @@
 	">", ">",
 	"&", "&",
 	"'", "'",
-	`"`, "&quot",
+	`"`, """,
 )
 
 // escape generates an escaped XML string.