Improvements Generic Row and Generic Field

Changes:

         underscore has beed added as a deps to resolve issues with other project having to add underscore as a dependency for Chiropractor.

Improvements:
        Added field and row handlebar helpers which now can generic dynamic or custom rows and fields on tables.
        Added grunt devserver and an example folder to show/house examples on how to use/extend Chiropractor
        functionality.

- Fixes #9
Upstream improvements - r0.1.15

- Fixes #10
Removed need for shim underscore dependency	#13
ie7 backbone fetch compatibility progress #14
Added Error Handling for 503 and unreachable #15
Fetch working in ie7 now with ie.cors #14 #15
Error handling added
Error timeout added
Host unreachable error added
Template customisable
Readme updated
Updated compiled files
Updated compiled versions