Enable Syntax Highlighter

[ryukinix]

From @ryukinix on January 31, 2018 22:37

Docs: : https://github.com/google/xi-editor/blob/master/doc/frontend.md
Foreign issue: xi-frontend/xi-term#47

Copied from original issue: #1

[ryukinix]

This was fixed at 3b61b11, please open again if this problem persists.