Add Message and Exception documentation

docs/exception.rst

@@ -0,0 +1,6 @@
+====================
+Mosquitto\\Exception
+====================
+
+This is an exception that may be thrown by many of the operations in the Client object. It does not add any features to the standard PHP `Exception` class.
+

docs/index.rst

@@ -15,6 +15,8 @@ Contents
 
  overview
  client
+ message
+ exception
 
 
 

docs/message.rst

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+==================
+Mosquitto\\Message
+==================
+
+.. php:namespace:: Mosquitto
+
+.. php:class:: Message
+
+ Represents a message received from a broker. All data is represented as properties.
+
+ .. php:attr:: $topic
+
+ (*string*) The topic this message was delivered to.
+
+ .. php:attr:: $payload
+
+ (*string*) The payload of this message.
+
+ .. php:attr:: $mid
+
+ (*int*) The ID of this message.
+
+ .. php:attr:: $qos
+
+ (*int*) The QoS value applied to this message.
+
+ .. php:attr:: $retain
+
+ (*boolean*) Whether this is a retained message or not.
+
+ This class has two static methods.
+
+ .. php:staticmethod:: topicMatchesSub()
+
+ Returns true if the supplied topic matches the supplied description, and otherwise false.
+
+ :param string $topic: The topic to match
+ :param string $subscription: The subscription to match
+
+ .. php:staticmethod:: tokeniseTopic()
+
+ Tokenise a topic or subscription string into an array of strings representing the topic hierarchy.
+
+ :param string $topic: The topic to tokenise