Updating dns sync docs
Improve documentation further
Merge pull request #188 from beittenc/update_dns_sync_docs

Updating dns sync docs
Allow TTL to be specified when using `sl cci dns sync`
Remove hardcoded references to DNS TTL of 7200

Also more consistent with existing DNS docblocks.
Merge pull request #191 from briancline/cci-dns-sync-ttl

Allow TTL to be specified when using `sl cci dns sync`
Adds Filtering by label for SSH key listings
Merge pull request #193 from sudorandom/sshkey_resolve_id

Adds Filtering by label for SSH key listings
Adds `sl hw` as an alias to `sl server` for hardware servers
License Update to MIT
Merge pull request #195 from beittenc/update_dns_sync_docs

Fix accidental unrolling of commits