Add script to generate a markdown changelog

tools/README.md

@@ -20,3 +20,13 @@ Used to synchronize the achievements info in steamworks to the game's data.json
 # Get your key here: https://steamcommunity.com/dev/apikey
 node fetch-steam-achievements-data.js DEVKEYDEVKEYDEVKEYDEVKEY
 ```
+
+## Changelog script
+
+Used to generate a basic git commit log (in markdown) between commit A & commit B
+
+**Usage**
+```sh
+# Will default to HEAD if second is not specified.
+./tools/changelog.sh 9a0062b 05cbc25
+```

tools/changelog.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+version=${2:-HEAD}
+cat >> temp_changelog.md << EOF
+# v1.X.X ($version)
+
+Description Here.
+
+Compare Commits [on github](https://github.com/danielyxie/bitburner/compare/$1...$version).
+
+---
+
+### Commits
+EOF
+
+git log $1...${version} \
+  --pretty=format:'* [`%h`]([https://github.com/danielyxie/bitburner/commit/%H): %s (by %aN on %ad) %n' \
+  --date=short \
+  --no-merges >> temp_changelog.md
+  # --reverse >> temp_changelog.md
+
+rm -f changelog_$1_${version}.md
+mv temp_changelog.md changelog_$1_${version}.md