Add ip helper to ease working woth IP addresses.
Automatically allocate an IP address for a node.
Add a noop jig for roles that just hold config data.
Add cohorts to roles as well
Fix sysdata.
Update devtool-build.md

Fixed the path
Merge pull request #692 from VictorLowther/pull-req-master-402e9ce91111702c1f810a6a19545ee4d489a3f9

CB 2.0: Make the network barclamp really work, and make all the recipes really Chef11 compliant. [1/5]
Merge pull request #691 from rperryman/master

+1, tested URL and it works
Give snapshot a state of its own.
Only call hooks for noderoles in committed snapshots.
Merge pull request #696 from VictorLowther/pull-req-master-9fc9a35a19bcde0e9191c1b957eded3f6024f5b9

Give snapshots states of their own, and update the noderole state machine to reflect that. [1/2]
Organized docs by barclamp and added mini TOC