[docs] document -Weveything more betterer
[docs] document -Weveything more betterer

Reviewers: aaron.ballman

Subscribers: jkorous, dexonsmith, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D65706

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@367889 91177308-0d34-0410-b5e6-96231b3b80d8

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