Added dropdown.js to package.json

Author: decipher-cs

package.json

@@ -18,6 +18,7 @@
  "./Card": "./dist/components/Card.js",
  "./Code": "./dist/components/Code.js",
  "./Collapsible": "./dist/components/Collapsible.js",
+ "./Dropdown": "./dist/components/Dropdown.js",
  "./Em": "./dist/components/Em.js",
  "./Heading": "./dist/components/Heading.js",
  "./Kbd": "./dist/components/Kbd.js",