Improve readme to emphasise standard interface

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Rename "adapter" and "component" to "service"

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Remove non-existent services

Either don't exist at all or have moved to libchan

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Fix service name formatting

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Document docker services

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Switch to using "service" in swarmd docs

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Remove "adapter" from service headings

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Merge pull request #68 from bfirsh/improve-readme

Improve readme
Small README fixes
Remove dockerclient

This is no longer needed now we have dockerserver.

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Rename forward backend to dockerclient

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Remove dockerclient heartbeat

Signed-off-by: Ben Firshman <ben@firshman.co.uk>