- Removed links to the gov uk stylesheets

- Deleted /stylesheets folder
- Removed sass build from gulpfile
- Changed gov links to usa links
- Changed other govuk styles, like breadcrumbs
- Changed name of uk_components file to us_components
- Fixed a few tests that broke on account of the changes

app/templates/components/us_components/input/README.md

@@ -0,0 +1,15 @@
+# Input
+
+## Installation
+
+See the [main README quick start guide](https://github.com/alphagov/govuk-frontend#quick-start) for how to install this component.
+
+## Guidance and Examples
+
+Find out when to use the input component in your service in the [GOV.UK Design System](https://design-system.service.gov.uk/components/text-input).
+
+## Component options
+
+Use options to customize the appearance, content and behavior of a component when using a macro, for example, changing the text.
+
+See [options table](https://design-system.service.gov.uk/components/text-input/#options-example-default) for details.