Updated mixins

Updated and commented mixins. Box-sizing accepts parameter for box-model type and defaults to border-box.
Updated README.md

Removed "SCSS" from description since this is more than SCSS now.
Updated Defaults and Settings

Swapped placement of some color variables from app-settings to defaults. App-settings should contain only front-facing variables that need to be changed quickly.
Added _functions.scss. Moved functions out of _mixins.scss

Added a functions file and moved the emCalc function into it. Not sure if I'll keep that separation but why not.
Added functions import to _base.scss
Organized files.
Moving functions back into mixins

Moving this back, I think I've begun making this too complex.
Reordering imports

Playing with the order of imports.
Removed _functions.scss
Removed _defaults.scss, moved content into _app-settings.scss

Condensing down to one file for containing global variables.
Removed functions.scss from compiling
Removed collector files

I've decided it'll be easier to manage fewer files and have condensed the imports all into _app.scss.
Added imports

Added imports from collector files. Recompiled app.css.
Organized files and imports

Just trying to organize this right, weighing complexity over flexibility.
Fixed broken variable
Added body font settings
Adding Maven Pro Google font and comments

Added font link and commented header elements.
Added header style settings from Bootstrap
Adding _grid.scss
Renamed _mixins to _global

I think I understand why Zurb named it the way they did.