[CB-13920] Use cache in Travis setup

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: cordova-docs
• Assignee: Unassigned
• Reporter: Jan Piotrowski (janpio)
• Created: 23/Feb/18 23:30
• Updated: 23/Feb/18 23:30

Description

Both `bundle install` and `npm install` could use some caching.
Also the buildAndDeploy.sh for the svn checkout maybe (if possible)