Update HelloBlinky

Updated the image for common LEDs
Added Deployment diagnostics
Converted to markdown
Removed extraneous samples header  
hmm okay. Wouldn't it make sense to have it here as well though? or maybe in troubleshooting? That way if people have questions about it, they can find out more about the settings that were auto-configured for them? (If they don't look at HelloBlinky, since it isn't an obvious place to look)