Assets are inaccessible when Crank.toml project name includes a hyphen

[AdamBlance]

Steps to reproduce (have only tested on Windows):

1. Clone the crankstart repo
2. Run cargo clean
3. Run crank run --release --example hello_world
4. Project should launch successfully in the simulator
5. Change the project name in Crank.toml from hello_world to hello-world
6. Run cargo clean again
7. Run crank run --release --example hello_world again
8. Game fails to launch with Got error while creating game: file examples/assets/heart not found: No such file

Happy to document this in the README in the meantime if anyone else can reproduce the problem.

[boozook]

Thanks! I totally agree. This should be fixed and mentioned in README before.