Updates to Fix broken tutorial#6

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kdthanvi wants to merge 3 commits intoViber:masterfrom

kdthanvi:master

Commits on Aug 20, 2018

specify dependency version to work
Thanvi, Karan | Styocho | PAYSD
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start script for now/heroku
Thanvi, Karan | Styocho | PAYSD
committed
add missing bracket
Thanvi, Karan | Styocho | PAYSD
committed