add change resource record set for route53
Merge pull request #101 from jackYext/master

add change resource record set for route53
Add endpoint to put cloudwatch alarm
Merge pull request #102 from pboening/master

Add endpoint to put cloudwatch alarm
Factor out adding of headers from options
Add CopyOptions to s3
Merge pull request #103 from yext/master

Refactor adding options to headers and add CopyOptions to s3
Adding local secondary indexes to table creation query builder
Go fmt
Merge pull request #104 from zowens/master

Adding local secondary indexes to table creation query
Fixing issue where local secondary indexes is empty causes exception from AWS
Merge pull request #105 from zowens/master

Fixing issue where local secondary indexes is empty causes AWS exception
Changed in the s3.Exists() function to check the resp for the status code rather
than trying to get it from the err.
Added check to make sure resp is not nil
Merge upstream changes into local fork