Fixed bug whereby region was ignored.

[jsuresh]

I couldn't connect to a sydney S3 bucket, and triaged the issue to the fix below. This is in line with what the doco seems to say as well.

http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/Config.html

I tested that when this option is unset, the region defaults to us-east.

[codecov-io]

Current coverage is 51.80%

Merging #1 into master will decrease coverage by -37.48% as of f08d096

@@            master     #1   diff @@
=====================================
  Files            1      1       
  Stmts           84     83     -1
  Branches        14     14       
  Methods          0      0       
=====================================
- Hit             75     43    -32
  Partial          0      0       
- Missed           9     40    +31

Review entire Coverage Diff as of f08d096

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