SWI-9649 Updates to Collection and README (#5)

Author: ckoegel

README.md

@@ -1,10 +1,9 @@
 # Bandwidth Postman Collection
 
-This repository contains importable Postman Collections for those who want to use Postman to interact with Bandwidth's APIs.
-
-The collections in this repository are automatically generated using the official Bandwidth OpenAPI Specification files, the documentation for which and download links can be found on our [Developer Doc Site](https://dev.bandwidth.com/apis).
-
-Each Collection in this repository corresponds to a different one of Bandwidth's APIs; follow the instructions below to import the Collections for the APIs you need.
+This repository contains an importable Postman Collection for those who want to use Postman to interact with Bandwidth's APIs.
+The collection contains endpoints matching those in our [Client SDKs](https://dev.bandwidth.com/sdks),
+and is automatically generated using the official Bandwidth OpenAPI Specification files,
+the documentation for which and download links can be found on our [Developer Doc Site](https://dev.bandwidth.com/apis).
 
 ## Using Postman
 
@@ -14,7 +13,5 @@ Each Collection in this repository corresponds to a different one of Bandwidth's
 
 1. Navigate to your workspace in either the Postman Web Client or Desktop App
 2. Click the `Import` button above the left sidebar
-3. Either paste the file URL in the box at the top of the modal or drag and drop your downloaded file
-    * Make sure to use the raw GitHub URL starting with `raw.githubusercontent.com`
-    * You can drag and drop multiple files to import more than one collection at a time
-4. Repeat for any other Collections you'd like to import
+3. Either paste the file URL in the box at the top of the modal or drag and drop your downloaded JSON file
+    * For URLs, make sure to use the raw GitHub URL starting with `raw.githubusercontent.com`