Circle Ci support

[zoetrope69]

Wondering if adding an example for Circle Ci would be helpful?

I'm trying to use it now and my configuration based on the .travis.yml file is failing atm.

[zoetrope69]

machine:
  node:
    version: 4.0
  environment:
    CONTINUOUS_INTEGRATION: true

dependencies:
  cache_directories:
    - node_modules
  override:
    - npm prune && npm install

test:
  override:
    - npm run lint
    - npm test
    - npm run test-node

OK, so I've got a working file now. Seems like you don't need to launch X so no need for the pre test functions.

One limitation here is to specify multiple node version you have to do the following:

test:
  override:
    - nvm use 0.10 && ./runtest
    - nvm use 0.12 && ./runtest 
    - nvm use 4.0 && ./runtest

Can see a live Circle CI build here: https://circleci.com/gh/zaccolley/react-redux-universal-hot-example

It's possible to remove that env variable in the circle.yml file by checking for process.env.CI as well as process.env.CONTINUOUS_INTEGRATION as this is default with Circle CI

[zoetrope69]

I've just found that Travis uses CI too so maybe should move to this?

https://docs.travis-ci.com/user/environment-variables/#Default-Environment-Variables

(Also Circle CI's enviroment variable page)
https://circleci.com/docs/environment-variables

[codejockie]

For both Travis CI and Circle CI 2.0 to be compatible, use process.env.CI to check.