Update NEWS file with date that 1.0.1 was released

$ git show 1.0.1
tag 1.0.1
Tagger: Aaron Rosen <aaronorosen@gmail.com>
Date:   Fri Dec 5 10:39:59 2014 -0800

1.0.1 Release!

Change-Id: I1a09d18df7fa0dcce9f29c96d1dce6184f890fd5