Changed version of dependency xml2js to support Node 0.8.
Changed version of dependency xml2js to support Node 0.8.

chrisradek/aws-sdk-js,chrisradek/aws-sdk-js,GlideMe/aws-sdk-js,aws/aws-sdk-js,GlideMe/aws-sdk-js,guymguym/aws-sdk-js,GlideMe/aws-sdk-js,chrisradek/aws-sdk-js,guymguym/aws-sdk-js,LiuJoyceC/aws-sdk-js,guymguym/aws-sdk-js,GlideMe/aws-sdk-js,LiuJoyceC/aws-sdk-js,aws/aws-sdk-js,LiuJoyceC/aws-sdk-js,jeskew/aws-sdk-js,jeskew/aws-sdk-js,jeskew/aws-sdk-js,chrisradek/aws-sdk-js,aws/aws-sdk-js,guymguym/aws-sdk-js,aws/aws-sdk-js,jeskew/aws-sdk-js