README improvements

Author: bmilekic

README.md

@@ -106,7 +106,7 @@ Note that all SDK communication with Optable DCNs is done over TLS. The only exc
 MainActivity.OPTABLE = OptableSDK(this, "dcn.customer.com", "my-app", true)
 ```
 
-However, since production DCNs only listen to TLS traffic, the above is meant for Optable developers running the DCN locally for testing.
+Note that production DCNs only listen to TLS traffic. The `insecure: true` option is meant to be used by Optable developers running the DCN locally for testing.
 
 By default, the SDK detects the application user agent by sniffing `settings.userAgentString` from a `WebView`. The resulting user agent string is sent to your DCN for analytics purposes. To disable this behavior, you can provide an optional fifth string parameter `useragent`, which allows you to set whatever user agent string you would like to send instead. For example, in Kotlin:
 
@@ -460,7 +460,7 @@ Working examples are available in the Kotlin and Java SDK demo applications.
 
 ## Identifying visitors arriving from Email newsletters
 
-If you send Email newsletters that contain links to your application (e.g., deep links), then you may want to automatically _identify_ visitors that have clicked on any such links via their Email address. Incoming application traffic which is originating from a subscriber click on a link in a newsletter is considered to be implicitly authenticated by the recipient of the Email, therefore serving as an excellent source of linking of online user identities.
+If you send Email newsletters that contain links to your application (e.g., deep links), then you may want to automatically _identify_ visitors that have clicked on any such links via their Email address. 
 
 ### Insert oeid into your Email newsletter template