Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

badges: more badges for great health

client: log messages with unknown tags

Adding the Go report card badge. Signed-off-by: Stephen J Day <stephen.day@docker.com>

Several clients have experienced panics after receiving unknown tags. The exact cause of these unknown messages is unknown. It is also not clear whether an unknown tag should be fatal to the session. This change provides more information in the panic message which we can then use to better understand this condition. Signed-off-by: Stephen J Day <stephen.day@docker.com>

errors: return errors rather than nil

readme: add link to GoDoc in prose

Signed-off-by: Stephen J Day <stephen.day@docker.com>

badge: add nice badges for good health

Upon further examination, the GoDoc is a very good source of documentation for this package. Send users there for now. Signed-off-by: Stephen J Day <stephen.day@docker.com>

A good open source project is measured by the number of badges at the top of the README. For now, we have two, but you have to start somewhere. Signed-off-by: Stephen J Day <stephen.day@docker.com>

Modified defaultRWTimeout to 30

Signed-off-by: French Ben <frenchben@docker.com>

Fix copyright statement

Removes placeholder, and adds basic copyright/license section to the README Signed-off-by: Sebastiaan van Stijn <github@gone.nl>