client#broadcast has no support for optional channel described in the api about zero_push

[adamvduke]

Hey @richardwan,

The broadcast method on the client takes a hash of params and does the 'right' thing with them. If you pass a channel in the params it will get encoded correctly and the API will broadcast to only those devices. Your code should look something like the following:

require 'zero_push'

ZeroPush.auth_token = 'auth-token'
response = ZeroPush.broadcast(
  channel: 'channel-name',
  alert: "You've got mail!"
)
puts response.body
# => {"sent_count"=>2}

Does that make sense?