Update to latest OkHttp master.

[JakeWharton]

Not sure if you need to track this internally first. h2-16 was just merged into OkHttp though.

$ mcv -pl okhttp -am | tail -7
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.627 s
[INFO] Finished at: 2014-12-15T16:43:19-08:00
[INFO] Final Memory: 27M/403M
[INFO] ------------------------------------------------------------------------

[ejona86]

We'll probably wait on it a bit, unless I'm missing something. Since there weren't any functional changes, we can still advertise h2-16 with the existing code. There is a non-zero cost to upgrading our okhttp version internally so I figure just wait until we get something for it. (Especially since okhttp doesn't provide SNAPSHOT binaries to Maven Central)

Do note that the change would also need to update the git submodule that we now have in lib/.

[JakeWharton]

Sounds good.

Especially since okhttp doesn't provide SNAPSHOT binaries to Maven Central

I'm actively working on this :)

git submodule that we now have in lib/

Ah, I didn't see these happen. Will keep in mind for the future.

[maniksurtani]

Now that OkHttp 2.2.0 is final and in mvn central