Add explicit JSON extension to require statement

Closes GH-22.

Reviewed-by: Titus Wormer <[email protected]>

Author: mbrn

index.js

@@ -3,7 +3,7 @@
 var html = require('property-information/html')
 var svg = require('property-information/svg')
 var find = require('property-information/find')
-var hastToReact = require('property-information/hast-to-react')
+var hastToReact = require('property-information/hast-to-react.json')
 var spaces = require('space-separated-tokens')
 var commas = require('comma-separated-tokens')
 var style = require('style-to-object')