What should the name be for Assert::example

[epage]

#108 added Assert::example.

We now have

• main_binary for running cargo run
• cargo_binary for running cargo run --bin <name>
• example for running cargo run --example <name>

Should example also be cargo_example?

CC @volks73 @azriel91

[epage]

Noticed this when adding a test for Assert:example

[volks73]

I originally had example_binary but that seemed redundant/confusing, so I shortened it to just example as I figured the usage of Cargo was implied.

The cargo_example works for me and is more consistent with the other function, especially given #111, where the usage of Cargo is no longer implied. The prepended "cargo" would indicate to users that the cargo command will be used.

[epage]

Addressed in assert_cmd
https://github.com/assert-rs/assert_cmd
assert_cli is going to morph into a wider-focused tool, including things like assert_fs. See #41