message: add infor of hiep nguyen
diff: @@ -936,6 +936,13 @@ How do I track my progress to get an awesome shirt from Hacktoberfest 2018?
  - Speaks German
  - [![github-alt][github-img]](https://github.com/verdantfire)
  +### Hiep Nguyen
  +
  +- Software Engineer at Dwarves Foundation
  +- Really likes Algorithms and Data Structure
  +- Also interested in Machine Learning
  +- [![github-alt][github-img]](https://github.com/hiepndd)
  +
  ### Ha Huy Long Hai
  - An undergraduate Computer Science student
  