respond with 400 for _limit exceeding max_limit
gracefully handle garbage limits
broken reference test
isint util function + _skip validation + cleaner code
Merge pull request #43 from elasticsales/max-limit-tweaks

Max limit tweaks
Merge pull request #41 from wuurrd/bad_super_call

Fix bad call to superclass method
Merge pull request #36 from floqqi/patch-2

fixed install_requires
Do more validation of limit field in resources
Better validation for ordering fields
Fix unittest to reflect limit=0 not being a valid limit
Fix inconsistent braces