Provide clearer explanation of the purpose of injected components #298
Description
I've made a few attempts to improve the clarity of the section on injected components in src/documents/SubcomponentDeclaration.md, but it still isn't clear enough - see review comments on pull #104 . This JIRA is a placeholder for suggestions for improvement or related discussion.
Additional context or notes
Originally filed as FLUID-6085 by @amb26 on November 22, 2016.