added macro for bson attribute fields
fixed typo
removed dep on model having _id attr defined on model
not writing name attribute
fixed yet another typo
merged master
renamed test files to mimic lib files
removed copy pasta error
removed defaults for _id on models
fixed name collision with mongoid
not undefing __ methods since it results in warnings
added tests for bsonid lib
added tests for finders lib
Merge pull request #20 from sportngin/bson_attr

added macro for bson attribute fields