Minor cleanup
Enforce GData version 2 in request header
Fixed indexOf test (#7)
Replaced full license text with pointer to UNLICENSE file
Readme: added end of life notice (#17)
Package: added API v2 references for clarity
Package: update to v2.3.0

See commits from Apr 21, 2013 for changes
Removed Githalytics from readme

Github has its own traffic stats now.
Added user.newsubscriptionvideos (closed #16)