Add easy way to determine if node is a tool.
Add Procera::Curator and some tests

The Curator is responsible for determining information
useful to other parties such as the
inputs/params(non_contextual)/outputs for tools and processes.
IO Nodes know their type strings
Add Data::Dump dep to cpanfile
Make sure to 'use' the source_path before checking %INC
Merge pull request #17 from davidlmorton/master

Add Curator