update API.md add Message type description

book/API.html

@@ -186,6 +186,16 @@
 <!-- ## Adding friends -->
 <!-- Each user have :w -->
 <hr />
+<h1 id="message-type"><a class="header" href="#message-type">Message type</a></h1>
+<pre><code class="language-json">    {
+    message: it's a message,
+    date: Time,
+    id: Id,
+    fromMe: bool,
+}
+    }
+</code></pre>
+<hr />
 <h1 id="requests"><a class="header" href="#requests">Requests</a></h1>
 <pre><code class="language-Rust">pub enum Request {
     StartApp,

book/print.html

@@ -226,6 +226,16 @@ EndMessage
 <!-- ## Adding friends -->
 <!-- Each user have :w -->
 <hr />
+<h1 id="message-type"><a class="header" href="#message-type">Message type</a></h1>
+<pre><code class="language-json">    {
+    message: it's a message,
+    date: Time,
+    id: Id,
+    fromMe: bool,
+}
+    }
+</code></pre>
+<hr />
 <h1 id="requests"><a class="header" href="#requests">Requests</a></h1>
 <pre><code class="language-Rust">pub enum Request {
     StartApp,

src/API.md

@@ -28,6 +28,19 @@
 
 ----
 
+# Message type
+``` json
+    {
+    message: it's a message,
+    date: Time,
+    id: Id,
+    fromMe: bool,
+}
+    }
+```
+
+---
+
 # Requests 
 ``` Rust
 pub enum Request {
@@ -100,3 +113,4 @@ Requesting `count` messages from `userId` started from `startIndex`'s message
     startIndex: 30
 }
 ```
+