Rename borderWidths to borderWidth

defaultConfig.stub.js

@@ -16,7 +16,7 @@ module.exports = {
     borderColor: ['responsive', 'hover', 'focus'],
     borderRadius: ['responsive'],
     borderStyle: ['responsive'],
-    borderWidths: ['responsive'],
+    borderWidth: ['responsive'],
     cursor: ['responsive'],
     display: ['responsive'],
     flexbox: ['responsive'],

defaultTheme.js

@@ -171,7 +171,7 @@ module.exports = function() {
       cover: 'cover',
       contain: 'contain',
     },
-    borderWidths: {
+    borderWidth: {
       default: '1px',
       '0': '0',
       '2': '2px',

plugins/borderWidth.js

@@ -0,0 +1 @@
+module.exports = require('../lib/plugins/borderWidth').default

plugins/borderWidths.js

@@ -1 +0,0 @@
-module.exports = require('../lib/plugins/borderWidths').default

src/corePlugins.js

@@ -10,7 +10,7 @@ import borderCollapse from './plugins/borderCollapse'
 import borderColor from './plugins/borderColor'
 import borderRadius from './plugins/borderRadius'
 import borderStyle from './plugins/borderStyle'
-import borderWidths from './plugins/borderWidths'
+import borderWidth from './plugins/borderWidth'
 import cursor from './plugins/cursor'
 import display from './plugins/display'
 import flexbox from './plugins/flexbox'
@@ -81,7 +81,7 @@ export default function(config) {
     borderColor,
     borderRadius,
     borderStyle,
-    borderWidths,
+    borderWidth,
     cursor,
     display,
     flexbox,