Add RO filesystem check, JetStream upgrade warning and detect license when mirrored

Changelog for 0.0.7:

• PR #6 Detect JetStream and warn about NATS Streaming by @welteki
• PR #9 Detect Pro components via license volume mount by @welteki
• PR #10 Print cpu and ram limits/requests on single line by @welteki
• PR #11 Add warning if root file system not set to read only by @welteki

Commits
0683abf Detect JetStream and warn about NATS Streaming by @welteki
a378419 Detect Pro components via license volume mount by @welteki
fa97ae0 Print cpu and ram limits/requests on single line by @welteki
69b3faf Remove prefix of 'function' from timeout warnings by @welteki
ed9bfe7 Warn if root file system not set to read only by @welteki
4ba3b4e Update README.md by @alexellis
cdaa431 Update README.md by @alexellis

Changes: 0.0.6...0.0.7

Generated by Derek