Add token serialization as a snippet option (fixes #72)

Change-Id: Ibc175000d162ceba5de79b11ef0d70d031e20e9d
diff --git a/.gitignore b/.gitignore
index 5cce705..613b6da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,7 @@
 /wiki.org
 /test-output
 /misc/web-api.md
+*.code-workspace
 *~
 .*
 *\#