feat: Switch to Yarn instead of npm

Author: lipis

.gitignore

@@ -1,10 +1,12 @@
-node_modules
-coverage
-lib
-build
-.nyc_output
+.awcache
 .DS_Store
-*.log
-.vscode
 .idea
-.awcache
+.nyc_output
+.vscode
+*.log
+build
+coverage
+lib
+node_modules
+package-lock.json
+yarn-error.log

README.md

@@ -15,7 +15,9 @@ Do you want to use [TSLint](https://palantir.github.io/tslint/) and [Prettier](h
 ### Get started
 
 ```bash
-npm install -D tslint-config-prettier
+yarn add --dev tslint-config-prettier
+# or
+npm install --save-dev tslint-config-prettier
 ```
 
 Make sure you've already set up [TSLint](https://palantir.github.io/tslint/) and [Prettier](https://github.com/prettier/prettier).
@@ -71,7 +73,7 @@ In order to execute the CLI tool, first add a script for it to `package.json`:
 }
 ```
 
-Then run `npm run tslint-check`.
+Then run `yarn tslint-check` or `npm run tslint-check`.
 
 ### Tutorials