Rebuild docs to make them easier to maintain

_posts/2000-01-03-PubSubClient2.md

@@ -0,0 +1,25 @@
+---
+tag: api
+type: constructor
+name: PubSubClient
+params:
+  - name: server
+    description: the address of the server
+    type: IPAddress, uint8_t[] or const char[]
+  - name: port
+    description: the port to connect to
+    type: int
+  - name: callback
+    optional: true
+    description: a pointer to a <a href="#callback">message callback function</a> called when a message arrives for a subscription created by this client
+    type: function*
+  - name: client
+    description: the network client to use, for example <code>WiFiClient</code>
+  - name: stream
+    optional: true
+    description: a stream to write received messages to
+    type: Stream
+---
+
+
+Creates a fully configured client instance.