add CI

[BurntSushi]

Would you be amenable to adding CI to this project that runs tests automatically?

[k3d3]

Yeah, for sure!

I've never used Travis CI so I'll have to do some research on that, but I'm certainly amenable to setting this up.

[BurntSushi]

Ah it's pretty easy! Here's the condensed version:

• Add a .travis.yml file to the root of your repo. Here's an example.
• The aforementioned example calls ci/script.sh, which can just be where you call cargo test. Here's an example.
• Once that's done, go to Travis CI and setup an account. You'll probably need to authorize it with GitHub.
• Finally, go to your profile on Travis CI, find your crossbeam-arccell repository, and enable it.

And that should be it!

[ghost]

An alternative solution is to push .travis.yml to the root directory with the following contents:

language: rust

rust:
  - stable
  - beta
  - nightly

Then go to the project page, click "Settings", then "Integrations & services", then "Add service", and select "Travis CI".

EDIT: Per @BurntSushi's suggestion, you can add a specific version to the rust section, too. For example:

language: rust

rust:
  - stable
  - beta
  - nightly
  - 1.25.0

[BurntSushi]

Please also include at least one specific Rust version to pin to. (stable, beta and nightly are all moving targets.)