Change the absolute path to a published crates for examples.

[alekspickle]

As I understand it is more convenient if you are developing this alone, but this will improve time to dive into you engine.
Love it by the way!

I can send a PR if you don't have any objection.

[mrDIMAS]

Hello! I understand that it is a bit unusual to clone/pull 5 repos to compile an example, but published crates usually way too outdated and examples most likely won't compile, so I'd leave it as it is.

[alekspickle]

Understandable. If thats the case, consider merging #36!
Keep up the good work! I personally would like to see this project grow into something great!

[mrDIMAS]

I'm closing this because I've moved dependencies in the workspace of the project so there is no need to download them separately in order to make things compile.