Rebuild docs to make them easier to maintain

_posts/2000-05-03-state.md

@@ -0,0 +1,32 @@
+---
+tag: api
+type: function
+name: state
+returns:
+  type: int
+  values:
+    - value: '-4 : <code>MQTT_CONNECTION_TIMEOUT</code>'
+      description: the server didn't respond within the keepalive time
+    - value: '-3 : <code>MQTT_CONNECTION_LOST</code>'
+      description: the network connection was broken
+    - value: '-2 : <code>MQTT_CONNECT_FAILED</code>'
+      description: the network connection failed
+    - value: '-1 : <code>MQTT_DISCONNECTED</code>'
+      description: the client is disconnected cleanly
+    - value: '0 : <code>MQTT_CONNECTED</code>'
+      description: the client is connected
+    - value: '1 : <code>MQTT_CONNECT_BAD_PROTOCOL</code>'
+      description: the server doesn't support the requested version of MQTT
+    - value: '2 : <code>MQTT_CONNECT_BAD_CLIENT_ID</code>'
+      description: the server rejected the client identifier
+    - value: '3 : <code>MQTT_CONNECT_UNAVAILABLE</code>'
+      description: the server was unable to accept the connection
+    - value: '4 : <code>MQTT_CONNECT_BAD_CREDENTIALS</code>'
+      description: the username/password were rejected
+    - value: '5 : <code>MQTT_CONNECT_UNAUTHORIZED</code>'
+      description: the client was not authorized to connect
+---
+
+Returns the current state of the client. If a connection attempt fails, this can be used to get more information about the failure.
+
+All of the values have corresponding constants defined in <code>PubSubClient.h</code>.