Jordan Day

I was seeing some crashes when calling `gen_changes:stop(pid)` on my `gen_changes` implementation, it appears that calls to the registered name for the view supervisor need to be changed slightly to...

On couchbeam 1.4.2 and CouchDB 2.0, when setting up a changes stream (either using `gen_changes` or by hand), it looks like `couchbeam_changes_stream` will wait at most 10 seconds before exiting...

This seems to fix the issue from #6, though I'm not sure that requiring >= Elixir 1.1 is acceptable? Added a compiler to copy the library from hash_ring/priv to hash_ring_ex/priv.

I'm having trouble using hash-ring-ex with an Elixir 1.1 project -- obviously the mixfile specifies 1.0.0, so I tried playing around with it, but just upping the elixir version requirements...