Add missing documentation.

Author: ioquatix

lib/async/container/forked.rb

@@ -189,6 +189,7 @@ def inspect
 					"\#<#{self.class} name=#{@name.inspect} status=#{@status.inspect} pid=#{@pid.inspect}>"
 				end
 
+				# @returns [String] A string representation of the process.
 				alias to_s inspect
 
 				# Invoke {#terminate!} and then {#wait} for the child process to exit.

lib/async/container/notify/log.rb

@@ -14,11 +14,14 @@ class Log < Client
 				# The name of the environment variable which contains the path to the notification socket.
 				NOTIFY_LOG = "NOTIFY_LOG"
 
+				# @returns [String] The path to the notification log file.
+				# @parameter environment [Hash] The environment variables, defaults to `ENV`.
 				def self.path(environment = ENV)
 					environment[NOTIFY_LOG]
 				end
 
 				# Open a notification client attached to the current {NOTIFY_LOG} if possible.
+				# @parameter environment [Hash] The environment variables, defaults to `ENV`.
 				def self.open!(environment = ENV)
 					if path = self.path(environment)
 						self.new(path)