Make config settable from outside the app

lib/remote_storage/riak.rb

@@ -3,10 +3,14 @@ require "riak"
 module RemoteStorage
   module Riak
 
+    def client
+      return @client if @client
+      @client = ::Riak::Client.new(LiquorCabinet.config['riak'].symbolize_keys)
+    end
+
     def authorize_request(user, category, token)
       return true if category == "public" && env["REQUEST_METHOD"] == "GET"
 
-      client = ::Riak::Client.new(settings.riak_config)
       categories = client.bucket("authorizations").get("#{user}:#{token}").data
 
       halt 403 unless categories.include?(category)
@@ -15,14 +19,12 @@ module RemoteStorage
     end
 
     def get_data(user, category, key)
-      client = ::Riak::Client.new(settings.riak_config)
       client.bucket("user_data").get("#{user}:#{category}:#{key}").data
     rescue ::Riak::HTTPFailedRequest
       halt 404
     end
 
     def put_data(user, category, key, data)
-      client = ::Riak::Client.new(settings.riak_config)
       object = client.bucket("user_data").new("#{user}:#{category}:#{key}")
       object.content_type = "text/plain"
       object.data = data
@@ -32,7 +34,6 @@ module RemoteStorage
     end
 
     def delete_data(user, category, key)
-      client = ::Riak::Client.new(settings.riak_config)
       riak_response = client.bucket("user_data").delete("#{user}:#{category}:#{key}")
       halt riak_response[:code]
     rescue ::Riak::HTTPFailedRequest