Add apply methods to s3rangereader

[moradology]

A very common use case when using S3 is having to account for URIs and strings. We can use the structure of S3 URIs to make the API for grabbing an S3RangeReader a little less imposing.

[moradology]

@jbouffard

[echeipesh]

Looks sensible and using the URI for s3 keys is something we should integrate more consistently. Would be good to see an example of cleanup in the client code this enables.

[moradology]

TiffTags read API comparison

(Assuming that uri is a String and a link to an S3 bucket)

Before:

val s3Uri = new AmazonS3URI(uri)
val s3Client = new AmazonS3Client(new AWSAmazonS3Client(new DefaultAWSCredentialsProviderChain))
val s3RangeReader = S3RangeReader(s3Uri.getBucket, s3Uri.getKey, s3Client)
TiffTagsReader.read(s3RangeReader)

After:

val s3RangeReader = S3RangeReader(uri)
TiffTagsReader.read(s3RangeReader)