Added pascal Triangle

[anuragdevon]

Description of new pull request

Program Added - 1(PascalsTr.go) Issue No.- #206

Checklist(self check):

• [x] My code follows the style guidelines(Clean Code) of this project
• [x] I have performed a self-review of my own code
• [x] My Filename is in proper format
• [x] Proper commenting has been done

[anuragdevon]

Heya! added a PR for golanag Pascals triangle, Check it out once :)