travis: cache node_modules for faster builds

This reduces build times by around 10 seconds.

http://blog.travis-ci.com/2013-12-05-speed-up-your-builds-cache-your-dependencies/
redux
Joseph Frazier 9 years ago
parent 972cafbee0
commit 2483b950e6

@ -4,3 +4,6 @@ node_js:
- "0.10"
- "0.12"
- "iojs"
cache:
directories:
- node_modules

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