Add onboarding instructions on home page for first start

[lewisl9029]

[lewisl9029]

Find a nice library to do this.

[lewisl9029]

Take a look at this onboarding breakdown for slack:

https://www.useronboard.com/how-slack-onboards-new-users/

Try to take into account for landing page design as well #245

[lewisl9029]

Try slack style floating pointers + ionic popover and backdrop?

[lewisl9029]

Take a look here too: http://linkedin.github.io/hopscotch/

But I think a custom approach might be better.

[lewisl9029]

A slack-like chatbot might be a decent supplement/alternative

[lewisl9029]

De-prioritizing this for now.

App seems to be simple and intuitive enough without needing any special onboarding. Need to get some more feedback on this.