docs improvements (#27)

Author: danieleades

README.md

@@ -9,4 +9,9 @@ A symbolic [arithmetic coding](https://en.wikipedia.org/wiki/Arithmetic_coding)
 
 Extending this library is as simple as implementing the `Model` trait for your own type, and then plugging it in the provided `Encoder`/`Decoder`. Supports both fixed-length and variable-length encoding, as well as both adaptive and non-adaptive models.
 
-Take a look at the  [API docs](https://docs.rs/arithmetic-coding/) or the [examples](https://github.com/danieleades/arithmetic-coding/tree/main/examples).
+Take a look at the  [API docs](https://docs.rs/arithmetic-coding/) or the [examples](https://github.com/danieleades/arithmetic-coding/tree/main/examples).
+
+This crate is heavily inspired by
+
+- [arcode-rs](https://github.com/cgburgess/arcode-rs)
+- [Data Compression With Arithmetic Coding - *Mark Nelson*, 2014](https://marknelson.us/posts/2014/10/19/data-compression-with-arithmetic-coding.html)

examples/README.md

@@ -0,0 +1,27 @@
+# Examples
+
+This crate has a number of examples, for various types of arithmetic encoding.
+
+## [Integer](./integer.rs)
+
+A simple example showing encoding of integers.
+
+## [Symbolic](./symbolic.rs)
+
+An example using custom symbols (you're not limited to primitive types!).
+
+## [Fixed Length](./fixed_length.rs)
+
+An example that uses a fixed length of symbols, rather than encoding EOF. Uses the `fixed_length` helpers from this crate.
+
+## [Sherlock](./sherlock.rs)
+
+Encodes the entire text of "The Adventures of Sherlock Holmes". By allowing a subset 'alphabet' of all possible characters, greater compression is achieved.
+
+## [Fenwick Tree (Adaptive)](./fenwick_adaptive.rs)
+
+Encodes "The Adventures of Sherlock Holmes" using an adaptive model based on [fenwick trees](https://en.wikipedia.org/wiki/Fenwick_tree).
+
+## [Fenwick Tree (Context-Switcing)](./fenwick_adaptive.rs)
+
+Encodes "The Adventures of Sherlock Holmes" using a *context switching* adaptive model based on [fenwick trees](https://en.wikipedia.org/wiki/Fenwick_tree). Achieves very high compression.