message: add Shehan Dhaleesha as a Contributor
diff: @@ -2149,6 +2149,12 @@ How do I track my progress to get an awesome shirt from Hacktoberfest 2018?
  - Apart from CP , I am a big fan of Machine Learning and TV shows like Silicon Valley.
  - [![github-alt][github-img]](https://github.com/sspeedy99)
  +## Shehan Dhaleesha
  +
  +- I am an CS Undergraduate
  +- Student @ UCSC
  +-[![github-alt][github-img]](https://github.com/shehand)
  +
  ### Shivam Ralli
  - I am an Undergrad.
  