tell the reader that they need git and make for this tutorial

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
Added sysvinit/sysconfig files for redhat family of distros (RHEL/CentOS/SL/etc.)

Docker-DCO-1.1-Signed-off-by: Adam Miller <admiller@redhat.com> (github: maxamillion)
Merge branch 'master' into maxamillion/add_redhat_sysvinit

* master: (64 commits)
  Move the canonical run configuration objects to a sub-package
  Remove useless code in client implementation of 'run'.
  pkg/opts: a collection of custom value parsers implementing flag.Value
  Move api-specific code to the api package
  Fix the tests, too
  Fix the one spot I missed dockerversion
  fix underline/heading
  New package `nat`: utilities for manipulating the text description of network ports.
  rewrite the PostgreSQL example using a Dockerfile, and add details to it
  Move even more stuff into dockerversion
  fix underline/heading
  Move docker version introspection to a sub-package.
  add port forwarding notes for mac/boot2docker docs
  Update remote_api_client_libraries.rst
  Avoid extra mount/unmount during container registration
  add a little more information about the docker run -P option
  lxc: Drop NET_ADMIN capability in non-privileged containers
  devmapper: Remove directory when removing devicemapper device
  add a little info on upgrading
  point out that ENV DEBIAN_FRONTEND will persist, so its not recommended
  ...
Merge pull request #3947 from maxamillion/maxamillion/add_redhat_sysvinit

Add sysvinit/sysconfig files for redhat family of distros (RHEL/CentOS/SL/etc.)
Merge pull request #4090 from SvenDowideit/add-install-make-git-to-devenv

tell the reader that they need git and make for this tutorial
(resubmit) Add notes about OS/X and remote daemons

Docker-DCO-1.1-Signed-off-by: Charles Merriam <charles.merriam@gmail.com> (github: merriam)
Minor error in example code (resubmit #4109)

Docker-DCO-1.1-Signed-off-by: Charles Merriam <charles.merriam@gmail.com> (github: merriam)
Merge pull request #4112 from merriam/patch-3

(resubmit #4110) Add notes about OS/X and remote daemons
Merge pull request #4111 from merriam/patch-4

Minor error in example code (resubmit #4109)