Update cheatsheets

truffle

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# truffle
+
+> Develop smart contracts for running services on the Ethereum blockchain.
+> More information: <https://www.trufflesuite.com/docs/truffle/reference/truffle-commands>.
+
+- Download a pre-built Truffle project (Truffle Box):
+
+`truffle unbox {{box_name}}`
+
+- Compile contract source files in the current directory:
+
+`truffle compile`
+
+- Run JavaScript and Solidity tests:
+
+`truffle test`
+
+- Run migrations to deploy contracts:
+
+`truffle migrate`
+
+- Display help for a subcommand:
+
+`truffle help {{subcommand}}`