Fix "Class 'CFRuntime' not found" error

[itskingori]

See ssue #42

[itskingori]

Sorry for the mess ... SHA: 322a91b was a single-line-fix ... then I figured out that the issue was caused because the AWS SDK was so so so old ... (i.e. the version upgrade makes the first commit pointless).

Also edited the 'modaws.class.php' to sort out the credentials instead of messing around with the original constructor in CFRuntime in the sdk.class.php file ... this was I think even upgrading the version will be easier. Separate customizations from the aws-sdk.

[pixelchutes]

I can confirm SHA: 322a91b (single-line-fix) resolved the:
PHP Fatal error: Class 'CFRuntime' not found in core/components/phpthumbof/model/aws/services/s3.class.php on line 70 error I was receiving.

I have not tried applying the subsequent PRs (upgrading aws-sdk), but would love to see a new version of phpThumbOf released with these updates.