Added a bit more detail about how to install nextflow
Added a bit more detail about how to install nextflow

Galithil/NGI-RNAseq,ewels/NGI-RNAseq,Galithil/NGI-RNAseq,Hammarn/NGI-RNAseq,ewels/NGI-RNAseq,SciLifeLab/NGI-RNAseq,Hammarn/NGI-RNAseq,Hammarn/NGI-RNAseq,ewels/NGI-RNAseq,Galithil/NGI-RNAseq,SciLifeLab/NGI-RNAseq,SciLifeLab/NGI-RNAseq,Hammarn/NGI-RNAseq,SciLifeLab/NGI-RNAseq,ewels/NGI-RNAseq,SciLifeLab/NGI-RNAseq,Galithil/NGI-RNAseq,ewels/NGI-RNAseq,Hammarn/NGI-RNAseq