* Adding an elasticache snapshot module.
Allows user to create, copy, or delete a snapshot.
* Removing unnecessary function
* Make indentation uniform.
* Making requested changes.
Fixing PEP8
Adding a more graceful fail for delete() if the snapshot's state valid (such as when it is in the process of being created).
* PEP8
* Fixing some formatting
move imports
fix parameter alignment
* move imports to the top of the file below documentation