README general infos

README.md

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 # 2Pack
+
+Project for the Blockchain and Distributed Ledger Technologies (A.Y. 2022-2023). The aim is to create a blockchain based decentralized app using [Solidity](https://soliditylang.org/).
+
+2Pack have the purpose to help the people to deliver packs in a secure and not expensive way. In fact an user can create a post with a pack to send, an other user can accept to deliver the pack and propose itself as delivery. When a delivery man completes the shipment on time, he will receive the prizes offered by the post, otherwise he will receive a penalty for each day of delay or for having lost the package.
+Any step is guaranteed by the blockchain.
+
+## Requirements
+- Solidity
+- An IDE for Solidity, a good choice is [Remix IDE](https://remix-project.org/)
+