Kustomize docs

installation instructions
kustomization.yaml - Example of a kustomization with explanations of each field.
versioning policy - How the code and the kustomization file evolve in time.
version 2.0.0 - Release note of Kustomize 2.0.0.
workflow - Some steps one might take in using bespoke and off-the-shelf configurations.
glossary - An attempt to disambiguiate terminology.
eschewed features - Why certain features are (currently) not supported in Kustomize.
contributing guidelines - Please read before sending a PR.
code of conduct