Update README with library limitations and disclaimer (#36)

Added a personal note about the library's limitations and maintenance.

Author: brightprogrammer

README.md

@@ -5,6 +5,8 @@
 [![Windows Build](https://github.com/brightprogrammer/MisraStdC/actions/workflows/test-windows-msvc.yml/badge.svg?branch=master)](https://github.com/brightprogrammer/MisraStdC/actions/workflows/test-windows-msvc.yml)
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+> While this was really fun to do, I realize there will always be some limitations of this library. If you just wanna have some fun with macros, go ahead and try this library, otherwise I think maintaining it is a real PITA. There will always exist a use-case that's just too covoluted to handle. Ciao Ciao!
+
 A modern C11 library designed to make programming in C less painful and more productive, written in pure C. MisraStdC provides generic containers, string handling, and formatted I/O inspired by higher-level languages while maintaining C's performance and control.
 
 > **Disclaimer:** This library is **not** related to the MISRA C standard or guidelines. The name "MisraStdC" comes from the author's name, Siddharth Mishra, who is commonly known as "Misra" among friends.