Correctly set the Docco output using options.output or file.dest and fix docco.document() invocation (up to 0.3.1 the dest will be 'docs' anyway and invocation will result in odd error)

* package.json: set name as "grunt-docco-ds", update version to "0.3.1", update urls to "devstonez" repo
* README.md: added 0.3.1 into Release History
* docco.js: fix docco.document() invocation
+ AUTHORS: added "devstonez" as contributor