Add timeline

README.md

@@ -13,6 +13,7 @@ The links below provide useful information about the Google Summer of Code
 program:
 - [GSoC student manual](https://developers.google.com/open-source/gsoc/resources/manual)
+- [GSoC 2016 timeline](https://developers.google.com/open-source/gsoc/timeline)
 - [Previous GSoC (2015)](https://www.google-melange.com/gsoc/homepage/google/gsoc2015)
 - [GSoC official mailing lists](https://developers.google.com/open-source/gsoc/resources/lists)