readme formatting for live albacore basecalling not right

[conchoecia]

To make this a little more friendly to those not familiar with bash, maybe change the formatting of rm -rf staging python stageflowcells.py data basecalls staging read_fast5_basecaller.py -r -i staging/$flowcell -s basecalls/$flowcell ...

to the executable block of code ...

#!/bin/bash
flowcell=<YOUR_FLOWCELL_NUMBER_HERE>
while true;
do
  rm -rf staging;
  python stageflowcells.py data basecalls staging 
  read_fast5_basecaller.py -r -i staging/"${flowcell}" -s basecalls/"${flowcell}"
  sleep 10 ;
done