This directory contains examples for the crate. You can test with the following
commands.
```console
$ git clone https://github.com/ayosec/bash-builtins.rs.git
$ cd bash-builtins.rs
$ cargo build --release --examples
$ enable -f target/release/examples/libcounter.so counter
$ enable -f target/release/examples/libupcase.so upcase
$ upcase a λ
A Λ
$ counter
0
$ counter
1
```