Buidler truffle 5 documentation

Buidler truffle 5 is a plugin for Truffle 5 TruffleContract. The Truffle framework is an environment used by Ethereal developers.

I added a required plugins section to the README file. The buidler truffle 5 plugin requires another plugin called buidler-web3 to run properly. I simply edited the markdown file to include the link to the buidler-web3 repository.

From working with this project, I read up more about Ethereum smart contracts. Smart contracts facilitate secure transactions without the need for third parties. Truffle provides various functionalities that help Ethereum development, such as smart contract compilation, linking, and deployment.