Add org app support to bolt (#521)

* updated payloads for org apps
* fixed error with org installation store not being accessed for non event type payloads
*  passed team_id to web-api
* added `enterpriseId` to `authorizeResult`, removed oauth orgAuthorize
* fixed #687 by extracting `team_id` and `enterprise_id` from `authorizations` for event payloads
* updated webclientPool logic to use `teamId` & `enterpriseId` from `authResult` first

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@slack/bolt",
-  "version": "2.4.1",
+  "version": "2.4.1-orgAppsBeta.4",
   "description": "A framework for building Slack apps, fast.",
   "author": "Slack Technologies, Inc.",
   "license": "MIT",
@@ -43,7 +43,7 @@
   },
   "dependencies": {
     "@slack/logger": "^2.0.0",
-    "@slack/oauth": "^1.2.0",
+    "@slack/oauth": "feat-org-apps",
     "@slack/types": "^1.9.0",
     "@slack/web-api": "^5.12.0",
     "@types/express": "^4.16.1",