Added rewrite-host-header to system model
Removing referenece to deprecated filter to get Vagrant functionality to work.
Correcting the reference comment to deprecated logging filter.
Added recipe support for DeRP filter (REP-1507).
Update README.md
Merge pull request #21 from rackerlabs/vagrant-maint

Removing referenece to deprecated filter to get Vagrant functionality to...
added rewrite-host-header attr to system model
Adding header normalization recipe and template (REP-1491)
Merge pull request #22 from rackerlabs/REP-1491-DeRP-Filter

Rep 1491 DeRP filter support
Readme update for header normalization recipe.
Merge from REP-1491-header-normalization.
Adding DeRP.
Updated boxes
Updated all boxes to use bento
Merge pull request #20 from rackerlabs/rewrite-host-header

Added rewrite-host-header to system model
Bump cookbook version
Add support for the header-identity filter
Update test coverage