Added a new test directory for autopkgtest along with some sample data

otes on how this package can be tested.

This package can be tested by executing

   sh run-unit-test

in order to confirm its integrity.

Notes : the sample data are recovered from; https://github.com/arq5x/  They are both ‘.BED’ 

file extensions. However the macs package install instructions is

using the ‘BAM’ extension format. If anyone has any recommendation on where to find sample data in this format it will be much appreciated :)

debian/examples/aluY.chr1.bed	usr/share/doc/macs/examples

debian/examples/gerp.chr1.bed	usr/share/doc/macs/examples

debian/README.test		usr/share/doc/macs

debian/tests/run-unit-test	usr/share/doc/macs

examples/*

debian/examples/*

release/common/*.tree