Added a README.md.
Added a README.md.

strongbox/strongbox,ivanursul/strongbox,sbespalov/strongbox,ivanursul/strongbox,strongbox/strongbox,korest/strongbox,sbespalov/strongbox,sbespalov/strongbox,nenko-tabakov/strongbox,strongbox/strongbox,AlexOreshkevich/strongbox,baisjuan/strongbox,strongbox/strongbox,sbespalov/strongbox