Update webpack-dev-server to version 2.4.0 🚀#17

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greenkeeperio-bot wants to merge 1 commit intomasterfrom greenkeeper-webpack-dev-server-2.4.0

+1-1

Commits on Feb 19, 2017

chore(package): update webpack-dev-server to version 2.4.0
greenkeeperio-bot
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