About the "instance" object

[silverpill]

NodeInfo 2.2 defines "instance" as "a concrete installation of a software running on a server".

This may be confusing because people often use "instance" and "server" interchangeably. And other definitions don't seem to make a distinction between the installation and the server itself:

Metadata about server software in use
The protocols supported on this server

...etc

I think it would be better to keep using the term "server" and either change the name of this object to description (with name and longDescription sub-properties) or make name and description top-level properties.