Read Rmd template and dump with project path.

def _modify_report(summary_path, out_dir):
    """Read Rmd template and dump with project path."""
    summary_path = op.abspath(summary_path)
    template = op.normpath(op.join(op.dirname(op.realpath(template_seqcluster.__file__)), "report.rmd"))
    content = open(template).read()
    out_content = string.Template(content).safe_substitute({'path_abs': summary_path})
    out_file = op.join(out_dir, "srna_report.rmd")
    with open(out_file, 'w') as out_handle:
        out_handle.write(out_content)
    return out_file