Fix for #184

[apotheosis91]

${ converts to ${
And the bug occurs when the special replacement pattern $& (that inserts the matched substring) is passed to the second argument of the replace method (which is inside while loop) on this line:
bbdata = bbdata.replace(am[0],nhtml);
But when specifying a function as second parameter in replace method, replacement patterns will not apply.

[Benexx]

Thanks for the fix, to bad the project isn;t supported anymore.