resolves issue #176 by updating to java 7.
resolves issue #176 by updating to java 7.

ysb33r/asciidoctorj,lefou/asciidoctorj,ancho/asciidoctorj,danielgrycman/asciidoctorj,mojavelinux/asciidoctorj,ysb33r/asciidoctorj,abelsromero/asciidoctorj,danielgrycman/asciidoctorj,solent/asciidoctorj,ysb33r/asciidoctorj,solent/asciidoctorj,ysb33r/asciidoctorj,mojavelinux/asciidoctorj,solent/asciidoctorj,abelsromero/asciidoctorj,asciidoctor/asciidoctorj,danielgrycman/asciidoctorj,abelsromero/asciidoctorj,asciidoctor/asciidoctorj,mojavelinux/asciidoctorj,lefou/asciidoctorj,robertpanzer/asciidoctorj,robertpanzer/asciidoctorj,asciidoctor/asciidoctorj,lefou/asciidoctorj,robertpanzer/asciidoctorj,ancho/asciidoctorj,danielgrycman/asciidoctorj,ancho/asciidoctorj,lefou/asciidoctorj,solent/asciidoctorj