Installation for FrugalWare
+ added missing link in index.rst
* some gramatic and spelling fixes

Thx jamtur :)
Exit with code 1 in case of error for `docker build`
Apply automatically to files named 'Dockerfile'
* s/docker/Docker/
Merge pull request #3358 from asbjornenge/master

Apply automatically to files named 'Dockerfile'
Fix typo in working with volumes doc page
Replace FPM --vendor with --license, and give it the proper value of "Apache-2.0"

Fixes #3372
Add DOCKER_HOST env var for client

This env var will set the -H flag on the docker
client.
Reorganize the syntax highlighting files in contrib under a common directory to match "contrib/init" and "contrib/completion"

This is split off from #2970.
add a simple note to suggest to the user to use RUN curl/wget/tool if the URL they need is behind auth
fixed header size on narrow desktop window
Update Dockerfile to use stackbrew/ubuntu (until it graduates), update Dockerfile MAINTAINER line, coalesce all apt-get installs into one invocation (including s3cmd by bringing in backports)
Merge pull request #3386 from bwiklund/headerfix

Fixed header image on docs.docker.io site
Fix install failure when busybox can't be downloaded

Whether or not the "busybox" image downloads and runs properly at the end of the build, we don't want to have the script return a failing exit code, especially since at that point, Docker is successfully installed, and we're just tooting our own horn for good measure.
Merge pull request #3380 from SvenDowideit/add-no-auth-note

add a simple note to suggest to the user to use RUN curl/wget/tool if the URL they need is behind auth
Merge pull request #3312 from DeX77/master

 Installation for FrugalWare
Merge pull request #3371 from Grunny/volumes-typo-fix

Fix typo in working with volumes doc page
Numerous small fixes to the CLI documentation
Merge pull request #3394 from jamtur01/clifixes

Numerous small fixes to the CLI documentation