Update to rebar 2.5.1
Workaround for OSX unix tool fail
Prevent echoing OSX fix for Makefile
Down a bit to rebar 2.5.0. (Fixes #70)

Rebar 2.5.1 has an issue with the version information and generated
releases, it would seem.
Fixes copy releases folder with slim
Merge pull request #73 from fooflare/fix-slim-release

Fixes copy releases folder with slim
Update webmachine dependency to 1.10.6
Merge pull request #75 from fooflare/update_webmachine

Update webmachine dependency to 1.10.6
Remove warning when compiling webmachine
Make rebar a little quieter with the deps warnings
Merge branch 'master' into ws

Conflicts:
	rel/overlay/webmachine/site/src/static_resource.erl