Two broken links (screenshots) in the Readme.

[0D0AResearch]

Hi,
In the README.md there are two screenshots in the getting started section with dead links:

https://github.com/Christopheraburns/AWS-JPL-OSR-Challenge/blob/master/images/create_env.jpg

https://github.com/Christopheraburns/AWS-JPL-OSR-Challenge/blob/master/images/clear_environment.jpg

It might be worth fixing these for people that haven't used RoboMaker before.
Cheers

[sailikhithk]

I second that, thought of issuing the same things. Please fix these images which can help newbies to go all in.