Link to contrib/docker

wrap at 80ish

This addresses #3224

Especially useful for the debian repo, as this makes it easier to get the key in a secure way

It has been over a year since any code has been commited. Some of the relevant links in
the documentation are broken, but since no pull requests are being accepted, they
won't get fixed. We should probably remove this from the README.

Signed-off-by: Silke Hofstra <silke@slxh.eu>

update docker hub url

Signed-off-by: Jeremy Cline <jeremy@jcline.org>

Signed-off-by: Andrew Conrad <aconrad103@gmail.com>

* document how to make IPv6 work

* spell out that pip will install 17.1 by default

The FreeBSD port has been moved to the net-im category

Signed-off-by: Matthew Wolff <matthewjwolff@gmail.com>

I have removed libsodium from CentOS system requirements, as it is
part PyNaCl.

Signed-off-by: Richard Kellner <richard.kellner@gmail.com>

register_new_matrix_user command has one more question, I have updated
the documentation to match the reality.

When installing on CentOS7 I wans't able to follow README instructions to
install due to errors. I was missing libsodium in order to compile
python dependencies.

Default version of Python pip is really old and therefore setuptools
upgrade ended with error as well. In order to be able to continue I
needed to upgrade pip as well.

Signed-off-by: Keyvan Fatehi <keyvanfatehi@gmail.com>

Needed before `pip instal --upgrade setuptools` for CentOS 7 and also doesn't hurt for any other distro.

Also added Fedora 25 to header as the same packages work for it as well.

Fix formatting blooper introduced in https://github.com/matrix-org/synapse/pull/1672 :/

Signed-off-by: Johannes Löthberg <johannes@kyriasis.com>

When 546ec1a5 was merged into develop, I accidentally overwrote the change
introduced in debbea5b (pr #1657). Reintroduce it.

Signed-off-by: William Leuschner <wel2138@rit.edu>

Signed-off-by: William Leuschner <wel2138@rit.edu>

Signed-off-by: William Leuschner <wel2138@rit.edu>