Polyfills Node v0.10.x with v0.12.x Buffer.compare and Buffer.prototype.compare functionality.
See v.12 API Docs
Buffer('123').compare(Buffer('123')); // 0
Buffer('123').compare(Buffer('1230')); // -1
Buffer('1230').compare(Buffer('123')); // 1
Buffer.compare(Buffer('123'), Buffer('123')); // 0
Buffer.compare(Buffer('123'), Buffer('1230')); // -1
Buffer.compare(Buffer('1230'), Buffer('123')); // 1