Update documentation to refer to shell, not bash.
Move footer commands to ONBUILD.
Remove aria2 and mksh.

Aria2 integration added increased complexity.
Mksh as substitute for /bin/dash required
additional script changes.
Merge pull request #1 from airstack/feature/faster-docker-builds

Faster docker builds
Remove old service-log and service-tags utils.
Update Makefile to use bash as default shell.
Update dockerfile to use COPY instead of ADD
Update commands to make less verbose.
Add core-slashpackage-install util, use with Serf.
Build with —-rm by default instead of —-force-rm.
Update builds to set default HOME env. 

Removes error message on run following use of 
ONBUILD in dockerfile.
Cleanup old TODOs in runit/2 file.
Update function names in core-package-install.
Update serf for specific version.
Update slashpackage_install to use new tmp_token.
Update haproxy enable to be less verbose.
Update socklog-remote to default down w/o output.
Update haproxy enable script to begin refactor.
Move socklog-unix enable script to separate file.
Add error checking in socklog-remote functions.