since divide by zero doesn't crash in js and NaN is falsy, let's just do this instead...
Revert "since divide by zero doesn't crash in js and NaN is falsy, let's just do this instead..."

This reverts commit 44c9de728827746c29166def931db3213622cbc8.
since divide by zero doesn't crash in js and NaN is falsy, let's just do this instead...
Merge branch 'master' of https://github.com/jackrr/obiechat into production