Remove scary upgrade bluff "YOU"LL STOP GETTING MONEY!!one11!@!!"

[fulldecent]

The README implements a dark pattern lie/bluff:

Critical Deadline: July 1st, 2025. You must implement one of these changes by this date, or customers will not be able to complete purchases. Please choose the option that best suits your needs and timelines.

This statement is not true since you CAN still use this library even today. Here is one example https://pacificmedicaltraining.com/education-main with VIEW CART on the right which does successfully proceed to checkout.

Please remove that.

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Additionally

A migration guide with details on supported use cases will be available soon.

For a company that has more than 10 staff, please implement your migration guide BEFORE you kick paying customers off of a working pattern.