Checking out, building and testing JBehave from scratch

Hi Mauro,

The Maven build has completely superseded the Ant build, which is now very broken. This is fair, since you've done all the work lately - thanks!

Could you please put a small amount of documentation out to show how to build JBehave from check-out, for those of us who don't know Maven? The learning curve has been off-putting even for those of us who care a lot

Cheers,
Liz.