fix(contrib): check that coreos/user-data has a discovery_url set
feat(contrib) Spin up an ELB

Fixes #1139
Use TCP > HTTP
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
chore(contrib): bump coreos to v349.0.0

Still waiting on Rackspace, as they're still on v338.0.0 as of
this commit.
chore(builder): bump to docker v1.0
Merge pull request #1105 from deis/check-discovery-url

fix(contrib): check that coreos/user-data has a discovery_url set
fix(builder): set docker version explicitly
Merge pull request #1169 from deis/coreos-343.0.0

chore(contrib): bump coreos to v349.0.0
test(component): add dummy `make test` to deis/registry
test(registry): added docker-registry 0.6.8 unit tests to `make test-unit`