Update README.md

docs: cant install anymore

README.md

@@ -2,7 +2,8 @@
 Cucko is a Google Chrome browser extension that lets you hide the number of likes, retweets and replies a tweet has.
 
 ## Installation
-[Download the extension](https://chrome.google.com/webstore/detail/cuckoo-for-twitter/agjappnhmfoffegbhnakelgilanmnibb) from the Chrome web store here.
+
+You can no longer install this extension.
 
 ## Development
 To get set up for local development, follow these steps:

src/package-lock.json

@@ -3310,9 +3310,9 @@
       "dev": true
     },
     "postcss": {
-      "version": "7.0.36",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.36.tgz",
-      "integrity": "sha512-BebJSIUMwJHRH0HAQoxN4u1CN86glsrwsW0q7T+/m44eXOUAxSNdHRkNZPYz5vVUbg17hFgOQDE7fZk7li3pZw==",
+      "version": "7.0.27",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.27.tgz",
+      "integrity": "sha512-WuQETPMcW9Uf1/22HWUWP9lgsIC+KEHg2kozMflKjbeUtw9ujvFX6QmIfozaErDkmLWS9WEnEdEe6Uo9/BNTdQ==",
       "dev": true,
       "requires": {
         "chalk": "^2.4.2",