Kurt/rw 37 upgrade (#566)

* Update readme

* Upgrade redwood to 0.37.x

app/api/src/directives/requireAuth/requireAuth.ts

@@ -0,0 +1,22 @@
+import gql from 'graphql-tag'
+
+import { createValidatorDirective } from '@redwoodjs/graphql-server'
+
+import { requireAuth as applicationRequireAuth } from 'src/lib/auth'
+
+export const schema = gql`
+  """
+  Use to check whether or not a user is authenticated and is associated
+  with an optional set of roles.
+  """
+  directive @requireAuth(roles: [String]) on FIELD_DEFINITION
+`
+
+const validate = ({ directiveArgs }) => {
+  const { roles } = directiveArgs
+  applicationRequireAuth({ roles })
+}
+
+const requireAuth = createValidatorDirective(schema, validate)
+
+export default requireAuth