Smarty panths fixed. :)
Merge pull request #154 from omeid/master

SmartyPants Encoding Issue.
fix async code.
use --test for running tests from bin/marked.
improve async code error handling.
attempt all benchmarks.
whitespace
v0.2.9
added smartypants to readme
Merge pull request #164 from ianstormtaylor/patch-2

added smartypants to readme
Updated README
Merge pull request #184 from ChrisWren/readme

Updated README
allow custom token._attributes