chore: Move tailwindcss to devDependency & peerDependency (#201)

* chore:  Move `tailwindcss` to `devDependency` & `peerDependency`
* docs: 📝  Update installation instructions in the `README.md`

Author: xeho91

README.md

@@ -83,7 +83,7 @@ $ npm i -D eslint
 Next, install the latest version of `eslint-plugin-tailwindcss` if you are using Tailwind CSS v3
 
 ```
-$ npm i -D eslint-plugin-tailwindcss
+$ npm i -D tailwindcss eslint-plugin-tailwindcss
 ```
 
 > ### Still using Tailwind CSS v2?

package.json

@@ -23,10 +23,12 @@
   "files": [
     "lib"
   ],
+  "peerDependencies": {
+    "tailwindcss": "^3.2.2"
+  },
   "dependencies": {
     "fast-glob": "^3.2.5",
-    "postcss": "^8.4.4",
-    "tailwindcss": "^3.2.2"
+    "postcss": "^8.4.4"
   },
   "devDependencies": {
     "@angular-eslint/template-parser": "^13.0.1",
@@ -39,6 +41,7 @@
     "daisyui": "^2.6.4",
     "eslint": "^7.1.0",
     "mocha": "^7.2.0",
+    "tailwindcss": "^3.2.2",
     "typescript": "4.3.5",
     "vue-eslint-parser": "^7.6.0"
   },