fix: add missing components

Author: gregberge

src/index.js

@@ -1,8 +1,15 @@
-export { default as Col } from './Col'
+export { default as Box } from './Box'
 export { default as Button } from './Button'
 export { default as Checkbox } from './Checkbox'
+export { default as Col } from './Col'
+export { default as FormCheck } from './FormCheck'
+export { default as FormCheckLabel } from './FormCheckLabel'
+export { default as FormGroup } from './FormGroup'
 export { default as Input } from './Input'
+export { default as Label } from './Label'
 export { default as Radio } from './Radio'
+export { default as RadioGroup } from './RadioGroup'
+export { default as Row } from './Row'
 export { default as Select } from './Select'
 export { default as Switch } from './Switch'
 export { default as Textarea } from './Textarea'