Rename fontWeights to fontWeight

defaultConfig.stub.js

@@ -22,7 +22,7 @@ module.exports = {
     flexbox: ['responsive'],
     float: ['responsive'],
     fontFamily: ['responsive'],
-    fontWeights: ['responsive', 'hover', 'focus'],
+    fontWeight: ['responsive', 'hover', 'focus'],
     height: ['responsive'],
     leading: ['responsive'],
     lists: ['responsive'],

defaultTheme.js

@@ -131,7 +131,7 @@ module.exports = function() {
       '4xl': '2.25rem', // 36px
       '5xl': '3rem', // 48px
     },
-    fontWeights: {
+    fontWeight: {
       hairline: 100,
       thin: 200,
       light: 300,

plugins/fontWeight.js

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

plugins/fontWeights.js

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

src/corePlugins.js

@@ -16,7 +16,7 @@ import display from './plugins/display'
 import flexbox from './plugins/flexbox'
 import float from './plugins/float'
 import fontFamily from './plugins/fontFamily'
-import fontWeights from './plugins/fontWeights'
+import fontWeight from './plugins/fontWeight'
 import height from './plugins/height'
 import leading from './plugins/leading'
 import margin from './plugins/margin'
@@ -87,7 +87,7 @@ export default function(config) {
     flexbox,
     float,
     fontFamily,
-    fontWeights,
+    fontWeight,
     height,
     leading,
     margin,