Support angular >=18 (#107)

* fix peerDependencies to handle angular >=18
* build(package.json): upgrade angular 18
* refactor(lib): removed renderer2 not used
* docs(readme): add table installation dependencies

.github/workflows/tests.yml

@@ -18,4 +18,4 @@ jobs:
       - uses: actions/checkout@v2
 
       - run: npm install
-      - run: npm run test:headless:singleRun
+      - run: npm run test:headless:singleRun

README.md

@@ -18,11 +18,13 @@ Check out the live demo: [ng2-fittext Demo](https://stackblitz.com/edit/stackbli
 
 ## Installation
 
-Install the library using npm:
+Install the library using npm according to your angular version (see table below):
+
+| Angular | ng2-fittext | command                       |
+|---------|-------------|-------------------------------|
+| <= v17  | 1.4.3       | ```npm i ng2-fittext@1.4.3``` |
+| >= v18  | 2.0.0       | ``` npm i ng2-fittext@1.5.0```|
 
-```bash
-npm install --save ng2-fittext
-```
 
 ### Usage