netrw, diff, and lualine support

[hossein-lap]

Just added some extra highlights and write a 256_noir.lua for lualine plugin.

Also I added some screenshots (and draw shadow-border around yours)

README file is now a markdown file.

[andreasvc]

Hi there! I like the screenshot and README changes. However, I can't merge this as is, since you have removed the Makefile and gen.py. Without this workflow, it becomes error prone and fiddly to change the color scheme, as there are multiple different versions (16 and 256 colors, terminal and gui). Cheers!

[hossein-lap]

Hi, sorry for late response.
To be honest, I didn't even take a look at them (Makefile and gen.py), just changed the .vim file '^^
and the 16 colors is the same, I didn't touch them.
I will see what can I do for them ;)
Really love your work here :D <3