Removed GCI & updated timeline

[Neilblaze]

Updates -

[x] Removed GCI from timeline

Fixes #139

Type of Change:

[x] code

• [x] My PR follows the style guidelines of this project
• [x] I have performed a self-review of my own code or materials

NOTE : Documentation update is required

[anubhavpulkit]

Ohh yes GCI😬

[anubhavpulkit]

Change Numbering, please