Added support for   and  operators thanks to Chris Manson https://github.com/mansona http://docs.mongodb.org/manual/reference/operator/query/gte/
http://docs.mongodb.org/manual/reference/operator/query/lt/
http://docs.mongodb.org/manual/reference/operator/query/lte/
Fixes issue #27
update package version 1.7.1
1.7.2
Added support for the $and operator
//http://docs.mongodb.org/manual/reference/operator/query/and/
Fixes issue #28
1.7.2
repackaging
Exists Operation
adding tests
Adding mongodb examples as tests for $exists
1.7.3
updating documentation
Adding failing tests for $nin operation
$nin working
cleaned up $nin code
Merge branch 'comparisons'
1.7.4
Added skip and limit options

Added Skip and Limit options on indepent files to keep them clean
even tho both are almost the same code (Array.slice).

Maybe add test cases for combined sort, skip and limit?
packaging logical operations
updating readme and adding more tests for skip and limit
1.7.5
updating readme