Rename textSizes to fontSize

defaultConfig.stub.js

@@ -47,7 +47,7 @@ module.exports = {
     tableLayout: ['responsive'],
     textAlign: ['responsive'],
     textColors: ['responsive', 'hover', 'focus'],
-    textSizes: ['responsive'],
+    fontSize: ['responsive'],
     textStyle: ['responsive', 'hover', 'focus'],
     tracking: ['responsive'],
     userSelect: ['responsive'],

defaultTheme.js

@@ -120,7 +120,7 @@ module.exports = function() {
       ],
       mono: ['Menlo', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', 'monospace'],
     },
-    textSizes: {
+    fontSize: {
       xs: '.75rem', // 12px
       sm: '.875rem', // 14px
       base: '1rem', // 16px

plugins/fontSize.js

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

plugins/textSizes.js

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

src/corePlugins.js

@@ -40,7 +40,7 @@ import stroke from './plugins/stroke'
 import tableLayout from './plugins/tableLayout'
 import textAlign from './plugins/textAlign'
 import textColors from './plugins/textColors'
-import textSizes from './plugins/textSizes'
+import fontSize from './plugins/fontSize'
 import textStyle from './plugins/textStyle'
 import tracking from './plugins/tracking'
 import userSelect from './plugins/userSelect'
@@ -111,7 +111,7 @@ export default function(config) {
     tableLayout,
     textAlign,
     textColors,
-    textSizes,
+    fontSize,
     textStyle,
     tracking,
     userSelect,