Make the example clear
Rewrite description
null=True if default value exists
Merge branch 'master' of https://github.com/teddychoi/BynamoDB
ItemNotFoundException when get item failed
Item can be deleted
Merge branch 'master' of https://github.com/teddychoi/BynamoDB
Any null like values is not valid in DynamoDB
Merge branch 'master' of https://github.com/teddychoi/BynamoDB
Add GTE and LTE Operator
Merge branch 'master' of https://github.com/teddychoi/BynamoDB
Use copied default value
PEP 8
Merge branch 'master' of https://github.com/teddychoi/BynamoDB
condition module for building conditions
Merge branch 'master' of https://github.com/teddychoi/BynamoDB