language: node_js
node_js:
  - "0.12"
  - "0.11"
  - "iojs"
  - "iojs-v1.0.4"

language: node_js
node_js:
  - "0.12"
  - "0.11"
  - "iojs"
  - "iojs-v1.0.4"
cache:
  directories:
    - node_modules

Enable caching of node_modules in Travis CI
CI: Enable caching of node_modules in Travis CI

Perhaps enables faster continuous integration tests, as modules don't
need to be fetched from npm as much.

To my understanding, eslisp builds are on the new container-based
architecture, so the explicit "sudo: false" option shouldn't be
necessary.
