`npm install` failed on Travis-CI


#1

Hey guys!
i want to use the default configs for build semantic-ui. Just created a semantic.json file containing only my custom options:

{
    "autoInstall": true
}

Though, npm install is falling on Travis-CI:

[13:07:51] TypeError: Path must be a string. Received undefined
    at assertPath (path.js:7:11)
    at Object.join (path.js:1211:7)
    at Gulp.module.exports (/home/travis/build/danilosampaio/semantic-kanban/node_modules/semantic-ui/tasks/install.js:92:25)
    at module.exports (/home/travis/build/danilosampaio/semantic-kanban/node_modules/orchestrator/lib/runTask.js:34:7)
    at Gulp.Orchestrator._runTask (/home/travis/build/danilosampaio/semantic-kanban/node_modules/orchestrator/index.js:273:3)
    at Gulp.Orchestrator._runStep (/home/travis/build/danilosampaio/semantic-kanban/node_modules/orchestrator/index.js:214:10)
    at Gulp.Orchestrator.start (/home/travis/build/danilosampaio/semantic-kanban/node_modules/orchestrator/index.js:134:8)
    at /home/travis/build/danilosampaio/semantic-kanban/node_modules/gulp/bin/gulp.js:129:20
    at _combinedTickCallback (internal/process/next_tick.js:73:7)
    at process._tickCallback (internal/process/next_tick.js:104:9)

what am i doing wrong? the build task shouldn’t to merge the default options with my custom options?