README has no mention of SSR

[chekdotdev]

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README

Describe the problem

The Supabase website states:

We generally recommend using the new @supabase/ssr package instead of auth-helpers. @supabase/ssr takes the core concepts of the Auth Helpers package and makes them available to any server framework. Source

However, there is no reference to the ssr package in this repo's README.

Describe the improvement

Add clarification that the recommended approach is to use @supabase/ssr in the README.

Additional context

It's not clear just by visiting this page that the ssr package is available and recommended as an alternative to the platform-specific auth helper packages.