hisat2: add singularity files

src/singularity_modules/hisat2/2.0.0/build.sh

+#/bin/sh
+sudo singularity build --force bin/hisat2:2.0.0.sif src/singularity_modules/hisat2/2.0.0/hisat2.def
+singularity sign bin/hisat2:2.0.0.sif

src/singularity_modules/hisat2/2.0.0/hisat2.def

+Bootstrap: docker
+From: ubuntu:18.04
+
+%labels
+MAINTAINER Nicolas Fontrodona
+
+%post
+HISAT2_VERSION=2.0.0
+PACKAGES="unzip \
+gcc \
+g++ \
+make \
+curl \
+ca-certificates"
+
+apt-get update && \
+apt-get install -y --no-install-recommends ${PACKAGES} && \
+apt-get clean
+
+curl -k -L http://ccb.jhu.edu/software/hisat2/downloads/hisat2-${HISAT2_VERSION}-beta-source.zip -o hisat2_linux-v${HISAT2_VERSION}.zip && \
+unzip hisat2_linux-v${HISAT2_VERSION}.zip && \
+cd hisat2-${HISAT2_VERSION}-beta && \
+make && \
+cp hisat2 /usr/bin && \
+cp hisat2-* /usr/bin && \
+rm -Rf hisat2-${HISAT2_VERSION}-beta
+
+%environment
+export HISAT2_VERSION=2.0.0
+
+%runscript
+exec /bin/bash "$@"