Cleanup base directory

Author: kristoferbaxter

CODE_OF_CONDUCT.md renamed to .github/CODE_OF_CONDUCT.md

@@ -4,7 +4,7 @@
 
 Uses native compression from Node Core, attempts to parallelize compression work across available CPUs, and requires Node >= `10.16`.
 
-![Interactive UI Processing Large Files](https://github.com/ampproject/filesize/raw/master/preview.gif)
+![Interactive UI Processing Large Files](https://github.com/ampproject/filesize/raw/master/.github/preview.gif)
 
 ## Installation
 
@@ -54,7 +54,7 @@ The AMP Project accepts responsible security disclosures through the [Google App
 
 ## Code of conduct
 
-The AMP Project strives for a positive and growing project community that provides a safe environment for everyone.  All members, committers and volunteers in the community are required to act according to the [code of conduct](CODE_OF_CONDUCT.md).
+The AMP Project strives for a positive and growing project community that provides a safe environment for everyone.  All members, committers and volunteers in the community are required to act according to the [code of conduct](.github/CODE_OF_CONDUCT.md).
 
 ## License
 

CONTRIBUTING.md renamed to .github/CONTRIBUTING.md

@@ -80,7 +80,7 @@
   },
   "lint-staged": {
     "*.ts": [
-      "prettier --config .prettierrc --write"
+      "prettier --write"
     ]
   },
   "husky": {
@@ -91,5 +91,11 @@
   },
   "publishConfig": {
     "access": "public"
+  },
+  "prettier": {
+    "printWidth": 120,
+    "trailingComma": "all",
+    "parser": "typescript",
+    "singleQuote": true
   }
 }