change tools name to lowercase

apps/bcftools/install_1.7.sh

apps/bedtools/install_2.25.0.sh

apps/bowtie2/install_2.3.2.sh

apps/bowtie2/install_2.3.4.1.sh

apps/cdhit/install_4.6.8.sh

apps/deeptools/install_3.0.2.sh

apps/fastqc/install_0.11.5.sh

apps/gatk/install_4.0.10.1.sh

apps/htseq/install_0.8.0.sh

apps/htseq/install_0.9.1.sh

apps/kallisto/install_0.43.1.sh

apps/kallisto/install_0.44.0.sh

apps/multiqc/install_0.9.sh

apps/multiqc/install_1.0.sh

apps/music/install_6613c53.sh

apps/rsem/install_1.3.0.sh

apps/rsem/install_1.3.1.sh

apps/salmon/install_0.8.2.sh

apps/samtools/install_1.5.sh

apps/samtools/install_1.7.sh