ignore packaging directories

Change-Id: I62c2f6d1e01c8da1ea67efa4c3f1848ff35049f3
Add tests, update README

Change-Id: I3b28bcb7afaec7c8e64f8bfd56d15f261d2ae6e7
add blog announce file

Change-Id: I432172eadca9387e8cf083ad4fef0e50d9babd29