Merge pull request #26 from draft-js-plugins/docs/clean-up-block-switcher

docs(example_block_switch): remove unnecessary file and dependence

Author: juliankrispel

examples/block-switcher/package-lock.json

@@ -11,9 +11,7 @@
     "prop-types": "^15.6.1",
     "react": "^16.5.0",
     "react-dom": "^16.2.0",
-    "react-scripts": "^1.1.1",
-    "react-text-selection-popover": "^1.0.3",
-    "styled-components": "^3.4.5"
+    "react-scripts": "^1.1.1"
   },
   "scripts": {
     "start": "react-scripts start",