Update host integration article

Update for changes in docker 1.2. Running the docker daemon with "-r=false" has been deprecated in favor of per-container restart policies.

Signed-off-by: wilsaj <wilson.andrew.j+github@gmail.com>
change link to previous version of docs to a relative link

Signed-off-by: wilsaj <wilson.andrew.j+github@gmail.com>
doc: rework paragraph to be less awkward/repetative

Signed-off-by: wilsaj <wilson.andrew.j+github@gmail.com>
doc: format paragraph as note

Signed-off-by: wilsaj <wilson.andrew.j+github@gmail.com>
doc: simplify verbiage in upstart/systemd examples

Signed-off-by: wilsaj <wilson.andrew.j+github@gmail.com>
doc: rework restart policy description to clarify that they are not set
by default, but shouldn't be used along with process managers

Signed-off-by: wilsaj <wilson.andrew.j+github@gmail.com>