Use "include" Leaflet API for addind methods to L.Map

[yohanboniface]

Just to stay closer from Leaflet own usages.
Thanks!

Yohan

[calvinmetcalf]

when you do it that way then you can't do

var map = L.map('map').addHash();

because it's not in the prototype chain yet, you can only do

var map = L.map('map');
map.addHash();

[calvinmetcalf]

ignore the previous comment, for both ways you have to set view before you can add the hash

[yohanboniface]

We just need to add return this; to make it work.
I'll add it ;)

[calvinmetcalf]

no this turns out to be a different issue, you get an error if you do

var map = L.map('map').addHash();

instead of

var map = L.map('map').setView([42.2, -71], 8).addHash();//or wherever

[calvinmetcalf]

yeah my issue was actually part of #13