Fix highlight of multiple paragraphs in list items

[shirosaki]

I tried to fix #9.

It seems to work fine with the following markdown.
https://github.com/Valloric/YouCompleteMe/blob/master/README.md

[ivotron]

seems to work with numbered lists but not with bullet lists (-, +, etc). For example, this works:

1. testing

   one,two

this doesn't:

• testing

  one,two

[goerz]

That's because the second definition of the mkdNonListItemBlock overwrites the first. Line 77 in the patched file should read

syn region mkdNonListItemBlock start="\n\(\_^\_$\|\s\{4,}[^ ]\|\t+[^\t]\)\@!" end="^\(\s*\([-*+]\|\d\+\.\)\s\+\)\@=" contains=@mkdNonListItem

and line 78 should be removed.

[ivotron]

cool, I just tried it and it works perfectly :)

[shirosaki]

@goerz thank you. I've updated the patch.

[plasticboy]

Seems to work very nicely, thanks.