Fixed documentation on profile usage

Author: viklund

README.md

@@ -136,15 +136,17 @@ by e.g. `tail -f .nextflow.log`
 There are three ways to run the pipeline:
 ```bash
 # Local run on node where one is logged in
-nextflow main.nf -profile local <options>
+nextflow main.nf -profile local<cluster> <options>
 
 # Called from login node, nextflow will queue SLURM jobs itself
-nextflow main.nf <options>
+nextflow main.nf -profile <cluster> <options>
 
 # When running inside a SLURM job nextflow will run on the local node
-srun nextflow main.nf <options>
+srun nextflow main.nf -profile local<cluster> <options>
 ```
 
+Where `<cluster>` can be either _bianca_ or _milou_.
+
 ### Customization
 
 Nextflow can pull from github (master branch) so if you specify this repo it will run