fix(contrib): check that coreos/user-data has a discovery_url set
fix(vagrant): disable vagrant cachier if present

Vagrant cachier trys to use vboxfs mounts if it is installed. Disable it if present.
feat(contrib) Spin up an ELB

Fixes #1139
Use TCP > HTTP
fix(controller): disable web UI

fixes #1144
fix(controller) disable django admin URL

If you accidentally create an object that requires an external library
such as the Release object, no docker image will be pushed to the registry,
which is unintentional. This disables the django admin URL such that you can't
shoot yourself in the :shoe:.
docs(pip install): add --upgrade to `pip install deis`

This flag is safe to use as a default, and would avoid the problem
reported on IRC where an existing deis client stays out-of-date if
you follow our instructions exactly.
Merge pull request #1151 from deis/pip-upgrade

docs(pip install): add --upgrade to `pip install deis`
Merge pull request #1147 from deis/1114-disable-web

fix(controller): disable web UI from django urls
Merge pull request #1110 from btrepp/cachierfix

fix(vagrant): disable vagrant cachier if present
docs(*): refactor and reorganize

Reorganize the docs to make more sense for users.
Merge pull request #1172 from deis/docs_restructuring

docs(*): refactor and reorganize
docs(*): fix toctree
Fixed grammatical mistake
Fixed typo where .com was added twice
Merge pull request #1188 from Imdsm/patch-2

docs(using): fixed typo where .com was added twice
Merge pull request #1187 from Imdsm/patch-1

docs(installing): fixed grammatical mistake
Merge pull request #1143 from itsmeduncan/1139-ec2-elb-autoprovision

feat(contrib) Spin up an ELB
chore(contrib): bump coreos to v343.0.0

```
core@deis-1 ~ $ docker version
Client version: 1.0.0
Client API version: 1.12
Go version (client): go1.2
Git commit (client): 63fe64c
Server version: 1.0.0
Server API version: 1.12
Go version (server): go1.2
Git commit (server): 63fe64c
core@deis-1 ~ $ fleetctl --version
fleetctl version 0.4.0
core@deis-1 ~ $ etcdctl --version
etcdctl version 0.4.3
```
fix(scheduler): remove arping hack

This is no longer required for v1.0.0