Added Featured Speakers From eventyay to Home Page

[mohitm15]

• [x] Included a Preview link and screenshot showing after and before the changes.
• [x] Included a description of the change below.
• [ ] Squashed the commits.

Changes done in this Pull Request

• https://mohitm15.github.io/2019.fossasia.org/
• Fixes #112 Adding speakers into featured list

Description / Changes

I had added the list of featured speakers from eventyay to homepage. Also some of the images are not present so I also had added images from eventyay to '/img' folder. Here the ratio of the images is original i.e. 1:1 ratio. Kindly review it.

Screenshots if any:

Before:

After:

img1 img 2 img 3

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[mohitm15]

since I am unable to upload preview link, I have added more screenshots to it.