Added SignatureVersion 4 to support other regions

[Benzolitz]

Since only the regions added before 30th January 2014 support Version 2, it would not be possible to use this plugin with newer regions (i.e. eu-central-1). Source: http://stackoverflow.com/a/26538266

To add support for Version 4 only one parameter for the S3Bucket is needed. Source: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingAWSSDK.html#specify-signature-version

[coveralls]

Coverage remained the same at 99.091% when pulling 5586e64 on Benzolitz:patch-1 into 6944872 on Upplication:master.

[Souler]

I'm not sure if this is correct. According to the document you linked it states:

When using AWS SDKs that were released before May 2016, you may be required to request Signature Version 4 as shown in the following table:

But this module aws-sdk dependency version is ^2.5.5 which was released on Sept 9th. Have you updated to the latest version of gulp-elasticbeanstalk-deploy? If so an the problem persist, report it back and I will further look into it ;).

[Benzolitz]

Hi, I must have overlooked that part. Nethertheless it doesn't work without the V4 signature.

I just started using this package today, so I have the latest version 1.0.5.

If I add my change locally to the aws.js file I can upload to beanstalk just fine. If I use the normal aws.js file I will get the error that I need to use V4.

[Souler]

Should be fixed by now, for any issues regarding this, comment it on #6.