Change example bot to work with slackclient>=2.0.

Author: jeffFranklin

example/README.rst

@@ -3,7 +3,7 @@ Example Slack events API bot
 
 This example app shows how easy it is to implement the Slack Events API Adapter
 to receive Slack Events and respond to
-messages using Slack's Web API via python-slackclient.
+messages using Slack's Web API via python-slackclient v2.
 
 🤖  Setup and running the app
 ------------------------------

example/example.py

@@ -1,5 +1,5 @@
 from slackeventsapi import SlackEventAdapter
-from slackclient import SlackClient
+import slack
 import os
 
 # Our app's Slack Event Adapter for receiving actions via the Events API
@@ -8,7 +8,7 @@
 
 # Create a SlackClient for your bot to use for Web API requests
 slack_bot_token = os.environ["SLACK_BOT_TOKEN"]
-slack_client = SlackClient(slack_bot_token)
+slack_client = slack.WebClient(slack_bot_token)
 
 # Example responder to greetings
 @slack_events_adapter.on("message")
@@ -18,7 +18,7 @@ def handle_message(event_data):
     if message.get("subtype") is None and "hi" in message.get('text'):
         channel = message["channel"]
         message = "Hello <@%s>! :tada:" % message["user"]
-        slack_client.api_call("chat.postMessage", channel=channel, text=message)
+        slack_client.chat_postMessage(channel=channel, text=message)
 
 
 # Example reaction emoji echo
@@ -28,7 +28,7 @@ def reaction_added(event_data):
     emoji = event["reaction"]
     channel = event["item"]["channel"]
     text = ":%s:" % emoji
-    slack_client.api_call("chat.postMessage", channel=channel, text=text)
+    slack_client.chat_postMessage(channel=channel, text=text)
 
 # Error events
 @slack_events_adapter.on("error")

example/requirements.txt

@@ -1,2 +1,2 @@
-slackclient>=1.0.5
+slackclient>=2
 slackeventsapi>=0.1