Feature - Use just dist for output dir

[eladcandroid]

trafficstars

Now we can't choose it because the plugin is running before recreating './dist' folder... The problem with the current './static' folder, is that the RSS file is a part of git commits

[barthr]

Also, in case of markdown it is showing the markdown as content instead of the generated HTML which looks very ugly in my rss feed reader

[vdraceil]

Using 'dist' dir as default - PR #13