Fix lintian errors

[heartsucker]

Run npm run node-deb to self package, then lintian *.deb to see the output.

E: node-deb: changelog-file-missing-in-native-package
E: node-deb: no-copyright-file
E: node-deb: extended-description-is-empty
W: node-deb: unknown-section base
E: node-deb: depends-on-essential-package-without-using-version depends: coreutils
E: node-deb: depends-on-essential-package-without-using-version depends: bash
E: node-deb: depends-on-essential-package-without-using-version depends: dpkg
W: node-deb: symlink-should-be-relative usr/bin/node-deb /usr/share/node-deb/bin/node-deb
W: node-deb: extra-license-file usr/share/node-deb/app/LICENSE
E: node-deb: prerm-calls-updaterc.d 2
W: node-deb: binary-without-manpage usr/bin/node-deb
E: node-deb: md5sums-lists-nonexistent-file node-deb_0.10.0_all/usr/share/node-deb/app/CHANGELOG.md
E: node-deb: md5sums-lists-nonexistent-file node-deb_0.10.0_all/usr/share/node-deb/app/templates/postinst
E: node-deb: md5sums-lists-nonexistent-file node-deb_0.10.0_all/usr/share/node-deb/app/templates/prerm
E: node-deb: md5sums-lists-nonexistent-file ... use --no-tag-display-limit to see all (or pipe to a file/program)
W: node-deb: file-missing-in-md5sums usr/share/node-deb/app/node-deb
W: node-deb: file-missing-in-md5sums usr/share/node-deb/app/templates/sysv-init
W: node-deb: file-missing-in-md5sums usr/share/node-deb/app/templates/control
W: node-deb: file-missing-in-md5sums ... use --no-tag-display-limit to see all (or pipe to a file/program)
W: node-deb: script-not-executable usr/share/node-deb/app/templates/executable
W: node-deb: script-not-executable usr/share/node-deb/app/templates/postinst
W: node-deb: script-not-executable usr/share/node-deb/app/templates/postrm
W: node-deb: script-not-executable ... use --no-tag-display-limit to see all (or pipe to a file/program)
W: node-deb: maintainer-script-calls-systemctl postinst:55
W: node-deb: maintainer-script-calls-systemctl postinst:56
W: node-deb: maintainer-script-calls-systemctl prerm:11
W: node-deb: maintainer-script-calls-systemctl ... use --no-tag-display-limit to see all (or pipe to a file/program)