Update README

README.md

@@ -46,11 +46,11 @@ This bundle is also used to test several CI (Continuous Integration) services.
 ### Requirements:
 
  - [Twitter keys][Twitter keys]
- - PHP >= 5.6
+ - PHP >= 7.1
  - a database (must be supported by Doctrine2)
- - [Symfony][Symfony GitHub] (2.7 or higher) with [Composer][Composer]. If you want to install it:
+ - [Symfony][Symfony GitHub] (3.4+) with [Composer][Composer]. If you want to install it:
 
-        php composer.phar create-project symfony/framework-standard-edition YOUR_DIRECTORY "2.7.*" -vvv
+        php composer.phar create-project symfony/framework-standard-edition YOUR_DIRECTORY "3.4.*" -vvv
 
 ### Steps:
 
@@ -103,25 +103,14 @@ This bundle is also used to test several CI (Continuous Integration) services.
  6. Add `php app/console statuses:hometimeline --env=prod` in your crontab (e.g. every hour) to retrieve tweets automatically
 
 ## Dependencies
- - [symfony/symfony][Symfony GitHub] (2.7+)
+ - [symfony/symfony][Symfony GitHub] (3.4+)
  - [abraham/twitteroauth][twitteroauth] (^0.6.0)
  - [twitter/bootstrap][Twitter Bootstrap] (use [Bootswatch 3.3.2][Bootstrap CDN])
 
 
 ### Tests:
 
-If `phpunit` is installed:
-
-    phpunit
-
-Or by installing `phpunit` with Composer:
-
-    php composer.phar require --dev phpunit/phpunit "4.8.* || 5.1.*" -vvv ; php vendor/bin/phpunit
-
-### Development environment
-
- - [doctrine/doctrine-fixtures-bundle][doctrine-fixtures-bundle] (~2.3)
- - [liip/functional-test-bundle][functional-test-bundle] (~1.0)
+    php vendor/bin/phpunit 
 
 [Packagist]: https://packagist.org/packages/alexislefebvre/async-tweets-bundle
 [Packagist Stable Image]: https://poser.pugx.org/alexislefebvre/async-tweets-bundle/v/stable.svg
@@ -159,5 +148,3 @@ Or by installing `phpunit` with Composer:
 [twitteroauth]: https://github.com/abraham/twitteroauth
 [Twitter Bootstrap]: https://github.com/twbs/bootstrap
 [Bootstrap CDN]: http://www.bootstrapcdn.com/#bootswatch_tab
-[doctrine-fixtures-bundle]: https://github.com/doctrine/DoctrineFixturesBundle
-[functional-test-bundle]: https://github.com/liip/LiipFunctionalTestBundle