Wrong config example in README: `timeout`

[Xuhao]

There is timeout config in config example, but it looks it won't be used, flow this line:

activerecord4-redshift-adapter/lib/active_record/connection_adapters/redshift_adapter.rb

Line 23 in 1b17aa7

RS_VALID_CONN_PARAMS = [:host, :hostaddr, :port, :dbname, :user, :password, :connect_timeout,

timeout is not a valid config so.

I think it should be connect_timeout or variables:statement_timeout:

development:
  adapter: redshift
  host: your_cluster_name.hashhash.ap-northeast-1.redshift.amazonaws.com
  port: 5439
  database: dev
  username: your_user
  password: your_password
  encoding: utf8
  pool: 3
  connect_timeout: 5000
  variables:
    statement_timeout: 5000

[sgeef]

Has this ever been confirmed?