instructions added

AutoincrementVersion.sh

#!/bin/sh

# Increments automatically CFBundleVersion or CFBundleVersion and CFBundleShortVersionString depending if it's a Debug or Release version.
# Created by Luis Ascorbe on 12/04/13.
# Copyright 2013 Luis Ascorbe. All rights reserved.

# Instructions
# 1- Put this file on the same folder where it's the .xcodeproj file
# 2- Create a new Run Script on Build Phases BEFORE Compile Sources
# 3- Rename it as "Auto Increment Version" (or whatever you want)
# 4- Put "${SRCROOT}/AutoincrementVersion.sh"
# Example: http://monosnap.com/image/mFnvFwawyygufe4USbgFItB32DKni8

buildPlist="${PROJECT_DIR}/${INFOPLIST_FILE}"
buildNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "$buildPlist")
releaseNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleShortVersionString" "$buildPlist")

echo "Plist path: $buildPlist - Build version: $buildNumber - Release Version: $releaseNumber"

# Increment CFBundleVersion for every build
if [ "$CONFIGURATION" == "Debug" ] || [ "$CONFIGURATION" == "Release" ]; then
    # newSubbuild=`echo $buildNumber| awk -F "." '{print $3}'`
    # newSubbuild=$(($newSubbuild + 1))
    # newbuildNumber=`echo $buildNumber| awk -F "." '{print $1 "." $2 ".'$newSubbuild'" }'`
    newbuildNumber=$(($buildNumber + 1))
    /usr/libexec/PlistBuddy -c "Set :CFBundleVersion $newbuildNumber" "$buildPlist"
    echo "New Build version: $newbuildNumber"
fi

# Increment CFBundleShortVersionString only for release builds
if [ "$CONFIGURATION" == "Release" ]; then
    newSubversion=`echo $releaseNumber | awk -F "." '{print $3}'`
    newSubversion=$(($newSubversion + 1))
    newReleaseNumber=`echo $releaseNumber| awk -F "." '{print $1 "." $2 ".'$newSubversion'" }'`
    /usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString $newReleaseNumber" "$buildPlist"
    echo "New Release Version: $newReleaseNumber"
fi