Merge pull request #458 from nhedger/chore/improve-readme

chore(docs): remove $ sign from shell commands

README.md

@@ -2920,7 +2920,7 @@ This project follows [SemVer](https://semver.org/).
 This will install the latest supported version:
 
 ```bash
-$ composer require react/http:^1.6
+composer require react/http:^1.6
 ```
 
 See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
@@ -2936,21 +2936,21 @@ To run the test suite, you first need to clone this repo and then install all
 dependencies [through Composer](https://getcomposer.org/):
 
 ```bash
-$ composer install
+composer install
 ```
 
 To run the test suite, go to the project root and run:
 
 ```bash
-$ vendor/bin/phpunit
+vendor/bin/phpunit
 ```
 
 The test suite also contains a number of functional integration tests that rely
 on a stable internet connection.
 If you do not want to run these, they can simply be skipped like this:
 
 ```bash
-$ vendor/bin/phpunit --exclude-group internet
+vendor/bin/phpunit --exclude-group internet
 ```
 
 ## License