Add p7zip package to the readme
Add p7zip package to the readme


Former-commit-id: 64eae93002a98e0845434ca6c8621d479d861e2c
dividiti/pencil-benchmark,rbaghdadi/pencil-benchmark,dividiti/pencil-benchmark,dividiti/pencil-benchmark,pencil-language/pencil-benchmark,rbaghdadi/pencil-benchmark,pencil-language/pencil-benchmark,pencil-language/pencil-benchmark,rbaghdadi/pencil-benchmark