Merge pull request #5 from DFE-Digital/readme

Added Bash readme

bash/README.md

@@ -0,0 +1,23 @@
+# Bash Script - Key Vault Secret Scanner
+
+You must ensure you have installed `bash`, `az` (Azure CLI) and `jq`.
+
+If you're running this on macOS you will need to change two references to `date`.
+
+Open `kv-secret-scan.sh` in a Text Editor and replace:
+
+```diff
+-TODAY=$(date -Idate)
+-DATE_90=$(date --date="90 days ago" +"%Y-%m-%d")
++TODAY=$(gdate -Idate)
++DATE_90=$(gdate --date="90 days ago" +"%Y-%m-%d")
+```
+
+## Set up
+```
+SLACK_WEBHOOK_URL=${SLACK_WEBHOOK_URL:-""}
+
+cd ./bash/
+sudo chmod +x ./kv-secret-scan.sh ./notify.sh
+bash ./kv-secret-scan.sh
+```