Update README.md

it doesn't hurt to make a reference to Modman
Fixed warning on creating new rule

(argument for foreach is not an array)
Merge branch 'fixes' of https://github.com/iMi-digital/LimeSoda_SampleDataGenerator into iMi-digital-fixes
Updated CHANGELOG.md
Closed #3 - Add notice for "Allow symlinks" setting to readme
Bumped version to 0.1.1