Added documentation on how to copy shock node from one server to another.
Returning shock response directly when posting node to a new Shock server, as trying to Unmarshal the node into the Node object can lead to errors if the node object format differs between shock servers (due to running different versions of the codebase)
Updated code to properly check for unset node creation time now that time objects are being used rather than storing the time stamps as strings.
Merge pull request #172 from jaredbischof/master

Various updates.