Update README.md

I've added the details of Sanscript Autumn of Open Source (fixes issue #43)

Author: ineffable23

README.md

@@ -81,3 +81,4 @@ All PR's are now being entertained ,Please star this repo in order to get furthe
 | [DAWOC](https://dawoc.herokuapp.com/) | No  |    |
 | [Winter of Code by NSEC](https://winterofcode.com/) | Swag rewards|  |
 | [Semester Long Projects](https://slop.dscdaiict.in/) (SLoP by DAIICT) | Prizes, swag rewards and internship opportunities for winners|  |
+| [Sanscript Autumn of Open Source](https://aos.sanscript.tech/) | Winner Certificate + Badge + surprise gifts|  |