feat: throw error objects

instead of just strings
you'll get a stacktrace and are able to debug the problem

also using single quotes instead of double quotes (jshint)
chore: update build
chore: update docs
chore: update docs submodule
chore: update docs submodule
chore: lint
chore: make jshint line numbers correct
chore: lint
docs: add link to Pivotal roadmap in README
chore: update docs submodule
chore: update examples submodule
chore: make jshint errors more readable
chore: lint
chore: lint
test: add fa-grid-layout spec
fix: fix errors caused by empty class names getting applied to Surfaces via
chore: lint
fix: make fa-grid-layout respect changes in ng-repeat index when updating
chore: update examples submodule
chore: lint