Updating OSCON17 sample

[mahikaw]

The current sample is incomplete in various aspects.

• Missing sessions and speakers need to be added.

• Images of some speakers along with their descriptions and sites need to be added.

[ayushgangrade]

Taking this up

[Pisush]

@mariobehling you are the owner of the repo. I don't want to hijack issues, that's why I'm asking in advance -
some of the issues here seem pretty beginner friendly and can make a good starting point for beginners, however, most of the issues have one or more comment suggesting that the issue is taken. It's not assigned to anyone and I can't see any progress.
My question: it ok to contribute on those, or would you have other ones that may need help?

[kapoorarpit]

@mariobehling I wanna work on this issue. Please assign this to me.