Parameterizing focus-outline mixin.
Merge pull request #7 from Desire2Learn-Valence/dbatiste/parameterize-mixin

Parameterizing focus-outline mixin.
Update README to include mixin parameters.
Merge pull request #8 from Desire2Learn-Valence/dbatiste/update-readme

Update README to include mixin parameters.
Applying namespace to mixin.
Merge pull request #9 from Desire2Learn-Valence/dbatiste/namespace-mixin

Applying namespace to mixin.