Update readmes based on feedback

Author: hectormmg

README.md

@@ -43,7 +43,7 @@ The [`lib`](https://github.com/AzureAD/microsoft-authentication-library-for-js/t
 
 **Disambiguation:**
 - The MSAL team provides full support to the current version for each package in the table below.
-- LTS (long-term support) versions will still receive support and bug-fixes but will not ship new features.
+- LTS (long-term support) versions will still receive some support and critical bug-fixes but will not ship new features. Our recommendation if you encounter any issues will always be to upgrade to the latest version of the library.
 - All supported packages were brought up to version parity as of `v5`. Packages with versions lower than `v4` in the LTS column skipped as many versions as required to jump directly to `v5`.
 
 #### MSAL Browser CDN Deprecation

lib/msal-browser/README.md

@@ -34,6 +34,8 @@ The MSAL library for JavaScript enables client-side JavaScript applications to a
 
 The `@azure/msal-browser` package described by the code in this folder uses the [`@azure/msal-common` package](https://github.com/AzureAD/microsoft-authentication-library-for-js/tree/dev/lib/msal-common) as a dependency to enable authentication in JavaScript Single-Page Applications without backend servers. This version of the library uses the OAuth 2.0 Authorization Code Flow with PKCE. To read more about this protocol, as well as the differences between implicit flow and authorization code flow, see the section [below](#implicit-flow-vs-authorization-code-flow-with-pkce).
 
+The `@azure/msal-browser` package **does NOT** support the implicit flow.
+
 
 ## FAQ
 
@@ -142,7 +144,7 @@ npm test
 npm run test:coverage
 ```
 
-## Authorization Code Flow with Proof Key for Code Exchange
+## Authorization Code Flow with Proof Key for Code Exchange (PKCE)
 
 `@azure/msal-browser` implements the [OAuth 2.0 Authorization Code Flow with PKCE](https://tools.ietf.org/html/rfc7636) for browser-based applications.