Well documented README.md

A well documented readme.

Author: dukeyico

README.md

@@ -1,25 +1,54 @@
 # annotate-snippets
 
-`annotate-snippets` is a Rust library for annotation of programming code slices.
+`annotate-snippets` is a Rust library designed to annotate programming code slices, making debugging and diagnostic rendering more intuitive and visually appealing.
 
 [![crates.io](https://img.shields.io/crates/v/annotate-snippets.svg)](https://crates.io/crates/annotate-snippets)
-[![documentation](https://img.shields.io/badge/docs-master-blue.svg)][Documentation]
+[![documentation](https://img.shields.io/badge/docs-master-blue.svg)](https://docs.rs/annotate-snippets/)
 ![build status](https://github.com/rust-lang/annotate-snippets-rs/actions/workflows/ci.yml/badge.svg)
 
-The library helps visualize meta information annotating source code slices.
+About the Library
+-----------------
+The annotate-snippets library provides tools to annotate source code slices with rich, meta information. It generates visually organized, styled error or informational messages, helping developers quickly pinpoint issues in their code.
+
+Key Feature:
+------------
 It takes a data structure called `Snippet` on the input and produces a `String`
 which may look like this:
 
 ![Screenshot](./examples/expected_type.svg)
 
 Local Development
 -----------------
-
+To build and test the project locally, use the following commands:
+    
     cargo build
     cargo test
 
-When submitting a PR please use  [`cargo fmt`][] (nightly).
+Formatting
+----------
+Before submitting a pull request (PR), ensure the code follows Rust’s formatting standards by running:
+    
+    cargo fmt
+
+Contributing
+------------
+When submitting a PR please use  [`cargo fmt`](https://github.com/rust-lang/rustfmt)  
+**NOTE:-** `cargo fmt` requires the nightly version of Rust.
+
+Core Concepts:
+--------------
+`Annotation`: Adding labels or notes to specific parts of code slices for clarity.
+
+`Snippet`: A small section of programming code to which annotations and diagnostics are applied.
+
+`Diagnostic Rendering`: Presenting errors or meta information visually for better debugging.
+
+`Renderer`: A mechanism that transforms the annotated snippets into styled, readable output.
+
+`Meta Information`: Data that gives additional context or details about a code snippet, like where an error occurred or what caused it.
+
+`Feature Parity`: Ensuring two tools (or versions of the same tool) have the same capabilities
 
-[`cargo fmt`]: https://github.com/rust-lang/rustfmt
+`Error Severity Levels`: Categories that describe how bad an error is (e.g., Error, Warning, Info) to help prioritize fixes.
 
-[Documentation]: https://docs.rs/annotate-snippets/
+`Programming code slices`: are small, specific portions or snippets of a larger codebase.