Add cleanup script

Change-Id: I4c82837d15c770ece91e6e0355ee7bf583a16d5e
diff --git a/cleanup.sh b/cleanup.sh
new file mode 100755
index 0000000..9997fa6
--- /dev/null
+++ b/cleanup.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Removes all build artifacts
+rm 404.html
+rm index.html
+rm sitemap.xml
+rm sitemap.xml.gz
+
+rm -r 'Bliss OS'
+rm -r BlissRoms
+rm -r common
+rm -r infrastructure
+rm -r assets
+rm -r search
+