enable script to find own directory to import barcodes

ver_info=`paste -d "\n" <(cellranger count --version) <(echo conversion script version 0.2.0.9001) | head -n 3 | tail -n 2`

##########

#####locate script for importing barcodes######

SOURCE="${BASH_SOURCE[0]}"

while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink

  TARGET="$(readlink "$SOURCE")"

  if [[ $TARGET == /* ]]; then

    echo "SOURCE '$SOURCE' is an absolute symlink to '$TARGET'"

    SOURCE="$TARGET"

  else

    SCRIPT_DIR="$( dirname "$SOURCE" )"

    echo "SOURCE '$SOURCE' is a relative symlink to '$TARGET' (relative to '$SCRIPT_DIR')"

    SOURCE="$SCRIPT_DIR/$TARGET" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located

  fi

done

echo "SOURCE is '$SOURCE'"

RDIR="$( dirname "$SOURCE" )"

SCRIPT_DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )"

if [ "$DIR" != "$RDIR" ]; then

  echo "DIR '$RDIR' resolves to '$SCRIPT_DIR'"

fi

echo "Running convertion script in '$SCRIPT_DIR'"

#####usage statement#####

help='