Xcode Build Script to automatically set Version & Build Number

gistfile1.sh

git=$(sh /etc/profile; which git)
latest_tag=$("$git" describe --tags --always --abbrev=0)
version_string="${git_release_version#*v}" # assumes the following tag format: v1.2.3
number_of_commits=$("$git" rev-list <$$$$$$-YOUR DEVELOPMENT BRANCH NAME HERE-$$$$$$> | wc -l | tr -d ' ')
target_plist="$TARGET_BUILD_DIR/$INFOPLIST_PATH"
dsym_plist="$DWARF_DSYM_FOLDER_PATH/$DWARF_DSYM_FILE_NAME/Contents/Info.plist"

for plist in "$target_plist" "$dsym_plist"; do
  if [ -f "$plist" ]; then
    /usr/libexec/PlistBuddy -c "Set :CFBundleVersion $number_of_commits" "$plist"
    /usr/libexec/PlistBuddy -c "Set :CFBundleShortVersionString ${git_release_version#*v}" "$plist"
  fi
done