Merge pull request #363 from lukechurch/master

Add basic instrumentation infrastructure to report usage
Change Divided Surface selection node
Updating documentation

Adding a ppt,, docx version of tutorial, sample update
added nodes to perform explicit lacing
added multithreading nodes
added lacing to future and now nodes
code cleaning
when extracting solid or solids from element, set flag to set references
added proper recalc management to pause node
modified eval to handle multithreading
added for each node
Add utility to dump node info.
Avoid null object reference in watch nodes.
Merge branch 'master' of github.com:ikeough/Dynamo
installer now installs for all users
more code cleaning
automap refactor
even more code cleaning
refactoring all up in this b****
New Samples