Update README.md with examples

Author: havebeenfitz

README.md

@@ -1,31 +1,47 @@
 # Slackito
 
-A client written with result builders to work with Slack Web API.
+A client written with result builders to work with Slack Web API. A small part of the larger iOS deploy infrastructure at Plata.
 
 
 ## Usage
 
 
 ```swift
-let message = SlackMessage(channel: "test-ios-channel-2") {
-    Header("Some header")
-    PlainSection("A plain text example")
-    
-    Divider()
+let meta = try meta(stage: stage, configPath: bundleId.configPath)
+
+let message = SlackMessage(channel: channel, ts: thread) {
+    MarkdownSection(
+        ":gitlab-success: \(meta.jobUrl) of *\(meta.appName) (\(bundleId))* has finished successfully!"
+    )
 
-    FieldsSection {
-        MarkdownSection("Section 1:\n *text 1*")
-        MarkdownSection("Section 2:\n text 2")
+    if let additionalMessage {
+        Divider()
+        MarkdownSection(additionalMessage)
     }
 
     Context {
-        "Branch: release"
+        "*Branch*: \(meta.branch)"
+        "*App version*: \(meta.version)"
+        if let additionalContext {
+            additionalContext
+        }
     }
 }
 
-do {
-    try await message.send(as: {bot_token_here})
-} catch {
-    print(error)
-}
+return message
 ```
+
+## Result
+<img width="559" height="140" alt="message_example" src="https://github.com/user-attachments/assets/3794b745-a295-4031-9491-87af0f0feb41" />
+
+## Supported blocks
+
+- Links
+- Field sections
+- User and group mentions
+- Context
+
+## TODO
+
+- Images
+- Tables