Update README.md

README.md

@@ -4,6 +4,8 @@
 
 Solutions for [Advent of Code](https://adventofcode.com/) in [Rust](https://www.rust-lang.org/).
 
+I wrote up a summary of my solutions and optimizations used [here](/docs/index.md).
+
 <!--- advent_readme_stars table --->
 ## 2023 Results
 
@@ -72,6 +74,9 @@ Solutions for [Advent of Code](https://adventofcode.com/) in [Rust](https://www.
 
 ---
 
+<details>
+<summary>Template readme</summary>
+
 ## Template setup
 
 This template supports all major OS (macOS, Linux, Windows).
@@ -332,15 +337,4 @@ Do you have aoc-specific crate recommendations? [Share them!](https://github.com
 
 -   **Integer overflows:** This template uses 32-bit integers by default because it is generally faster - for example when packed in large arrays or structs - than using 64-bit integers everywhere. For some problems, solutions for real input might exceed 32-bit integer space. While this is checked and panics in `debug` mode, integers [wrap](https://doc.rust-lang.org/book/ch03-02-data-types.html#integer-overflow) in `release` mode, leading to wrong output when running your solution.
 
-## Footnotes
-
-[^1]: The session cookie might expire after a while (~1 month) which causes the downloads to fail. To fix this issue, refresh the `.adventofcode.session` file.
-[^2]: The session cookie might expire after a while (~1 month) which causes the automated workflow to fail. To fix this issue, refresh the AOC_SESSION secret.
-[^3]:
-    <img src="https://user-images.githubusercontent.com/1682504/198838369-453dc22c-c645-4803-afe0-fc50d5a3f00c.png" alt="Set a breakpoint" width="450" />
-
-[^4]:
-    <img alt="Run debugger" src="https://user-images.githubusercontent.com/1682504/198838372-c89369f6-0d05-462e-a4c7-8cd97b0912e6.png" width="450" />
-
-[^5]:
-    <img alt="Inspect debugger state" src="https://user-images.githubusercontent.com/1682504/198838373-36df6996-23bf-4757-9335-0bc4c1db0276.png" width="450" />
+</details>