Add Parcel bundler to build process.

Change-Id: Iade8364efa0d2ce9443b67e20bf09ea93a3d7bcd
diff --git a/.gitignore b/.gitignore
index 2b156fa..f87d829 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,6 +46,10 @@
 node_modules
 web_modules
 
+# Parcel
+.parcel-cache/
+/src/main/resources/META-INF/resources/dist/
+
 # Unknown
 out/