conda_packages.sh: add script to install conda packages for nf

src/conda_packages.sh

+#!/bin/sh
+function install_env {
+  if [ -d "${CONDA_PREFIX}/envs/${1}_${2}" ]; then
+    install_env ${1}_${2} ${3}
+  fi
+}
+
+install_env pigz 2.3.4 pigz
+install_env tophat 2.1.1 tophat
+install_env hisat2 2.0.0 hisat2
+install_env hisat2 2.1.0 hisat2
+install_env rsem 1.3.1 rsem
+install_env rsem 1.3.0 rsem
+install_env samblaster 0.1.24 samblaster
+install_env nextflow 0.25.1 nextflow
+install_env nextflow 19.01.0 nextflow
+install_env nextflow 0.32.0 nextflow
+install_env nextflow 0.28.2 nextflow
+install_env samtools 1.7 samtools
+install_env samtools 1.5 samtools
+install_env bowtie2 2.3.2 bowtie2
+install_env bowtie2 2.3.4.1 bowtie2
+install_env sratools 2.8.2 sra-tools
+install_env trimmomatic 0.36 trimmomatic
+install_env trimmomatic 0.39 trimmomatic
+install_env Python 3.6.1 Python
+install_env Python 2.7.13 Python
+install_env kallisto 0.44.0 kallisto
+install_env kallisto 0.43.1 kallisto
+install_env music 1.0.0 music
+install_env umitools 0.3.4 umitools
+install_env fastp 0.19.7 fastp
+install_env gatk 3.8 gatk
+install_env cutadapt 1.14 cutadapt
+install_env bioawk 1.0 bioawk
+install_env canu 1.7 canu
+install_env fastqc 0.11.5 fastqc
+install_env bedtools 2.25.0 bedtools
+install_env macs2 2.1.2 macs2
+install_env bcftools 1.7 bcftools
+install_env salmon 0.8.2 salmon
+install_env urqt d62c1f8 urqt
+install_env multiqc 0.9 multiqc
+install_env multiqc 1.7 multiqc
+install_env multiqc 1.0 multiqc
+install_env cdhit 4.6.8 cdhit
+install_env deeptools 3.0.2 deeptools
+install_env htseq 0.9.1 htseq
+install_env htseq 0.11.2 htseq
+install_env R 3.4.3 R
+install_env R 3.3.1 R
+install_env file handle 0.1.1 file handle
+install_env ncdu 1.13 ncdu
+install_env picard 2.18.11 picard
+install_env sambamba 0.6.7 sambamba
+