kmtoki / brainfuck

impl brainfuck by rust

brainfuck interpreter by rust

usage:

```
cargo run <expr>
```

or

```
./brainfuck <expr>
```

# Hello, world!

```
cargo run '+++++++++[>++++++++>+++++++++++>+++++<<<-]>.>++.+++++++..+++.>-.------------.<++++++++.--------.+++.------.--------.>+.'
```