Fix incrementing CFBundleVersion

[macmule]

From:

#!/bin/bash

set -o errexit
set -o nounset

VERSION=$(git --git-dir="$PROJECT_DIR/.git" --work-tree="$PROJECT_DIR" log | grep '^commit' | wc -l)
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $VERSION" "$TARGET_BUILD_DIR/$INFOPLIST_PATH"

To:

#!/bin/bash
#
# https://crunchybagel.com/auto-incrementing-build-numbers-in-xcode/
# 

buildNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "${PROJECT_DIR}/${INFOPLIST_FILE}")
buildNumber=$(($buildNumber + 1))
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $buildNumber" "${PROJECT_DIR}/${INFOPLIST_FILE}"

[macmule]

In 1.5.0