Added license to package.json, Fixes #313
Updated README for 0.3.0 api
Merge pull request #324 from chjj/readme

Updated README for 0.3.0 api
Fix minus used as hyphen in manpage

Closes gh-231
Merge pull request #327 from juliantaylor/man-hyphen

Fix minus used as hyphen in manpage
add attribute at image syntax
do not tokenize emails as html. fixes #329.
do not tokenize emails as html. fixes #329 again.
escape lang class.
sanitize javascript: links.
completely escape fenced code.
rely on options passed to the renderer object.
ensure javascript: protocols are not encoded in entities and references.
add image css attribute test case
merge from upstream