Fixes GH-30 (https://github.com/spring-projects/spring-integration-aws/issues/30) * Add S3InboundStreamingMessageSource and related S3FileInfo * Extend spring-integration-aws-1.1.xsd with s3-inbound-streaming-channel-adapter tag. * Add S3StreamingInboundChannelAdapterParser and s3-inbound-streaming-channel-adapter handler. * Add S3 streaming spring tests. * Add S3 streaming documentation to README.md. Issue #30: Resolve code style and formatting issues Polishing: * Revert some `build.gradle` changes * Add JavaDoc to the `S3FileInfo.getPermissions()`