Begin ordered list from 0 in Markdown

Question

I\'m new to Markdown. I was writing something like:

#Table of Contents  
0. Item 0  
1. Item 1  
2. Item 2

But that generates:

Answer 1

Via html: use

Via CSS:

ol {
    counter-reset: num -1; // reset counter to -1 (any var name is possible)
}
ol li {
    list-style-type: none; // remove default numbers
}
ol li:before {
    counter-increment: num; // increment counter
    content: counter(num) ". "; 
}

FIDDLE