Add support for metalsmith builder hooks#428

Merged

zigomir merged 5 commits intovuejs:masterfrom

Toilal:feature/metalsmith-builder-hooks

Apr 9, 2017

Commits on Apr 1, 2017

Commits on Apr 4, 2017

Fix documentation sentence
Toilal
committed

Commits on Apr 7, 2017

Add e2e test for metalsmith custom plugin
Toilal
committed

Commits on Apr 8, 2017

Enhance e2e tests for metalsmith custom plugin
Toilal
committed