Created update script for ledger-cli using simplefin

ledger/setup.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+read -p "Enter your setup token: " token
+
+while : ; do
+    read -sp "Enter password: " password
+    echo
+    read -sp "Confirm password: " confirmed
+    echo
+    [[ "$password" == "$confirmed" ]] && break || echo "Passwords are not equal."
+    echo
+done
+
+CLAIM_URL="$(echo "$token" | base64 -d)"
+ACCESS_URL="$(curl -H "Content-Length: 0" -X POST "$CLAIM_URL")"
+
+echo "Claim URL: $CLAIM_URL"
+echo "Access URL: $ACCESS_URL"
+
+echo "$ACCESS_URL" | openssl aes-256-cbc -salt -a -pbkdf2 -iter 1000000 -pass "pass:$password" > ~/.simplefin.enc
+