Use golden Sledgehammer image.

Instead of making it be a requirement that everyone build their own
Sledgehammer locally, arrange for the bootstrap recipe to download the
appropriate Sledgehammer image from our bucket on Amazon, using sha1
hash checking along the way to ensure that everything is peachy.

Sledgehammer images are indexed by the sha1sum of their source files.
See the changes in tools/build_sledgehammer.sh for more details.
Merge pull request #96 from VictorLowther/use-golden-sledgehammer

Use golden Sledgehammer image.
add friendly names
Merge pull request #90 from waynepallen/master

+2 (addressed -1, thanks!) Define roles for stand-alone puppet agent installation
node bring up process
minor docs reorg
Merge pull request #98 from cloudedge/doc_reorg

Add docs about Node Registration Process in Deploy Guide
remove onclick handlers for now to make network range save functional