Crawler for Scala
Merge pull request #17 from adamretter/master

Crawler for Scala
Updated to work with the current download site
I assume newer ones first is better
Marking as executable
Quick doc
Doc update
Added sbuild.crawler.

This crawler fetches a properties file from http://sbuild.org containing verison - download-url associations.
The resulting installer json file is used by the SBuild Jenkins Plugin https://github.com/jenkinsci/sbuild-plugin.
Removed commented out code.
Merge pull request #19 from lefou/sbuild-crawler

Added sbuild.crawler.