Updated test suite

Author: gnugat

.travis.yml

@@ -8,11 +8,8 @@ cache:
 
 php:
     - 7.0
-    - hhvm
-
-matrix:
-    allow_failures:
-        - php: hhvm
+    - 7.1
+    - 7.2
 
 before_script:
     - composer selfupdate

README.md

@@ -21,9 +21,6 @@ First install it using [Composer](https://getcomposer.org/download):
 
     composer require --dev memio/spec-gen:^0.8
 
-> **Note**: you'll also need to set in your `composer.json` the
-> `minimum-stability` parameter to `alpha`.
-
 Then enable it in `phpspec.yml`:
 
 ```

composer.json

@@ -38,7 +38,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^2.0",
-        "phpunit/phpunit": "^6.0"
+        "phpunit/phpunit": "^7.0"
     },
     "extra": {
         "branch-alias": {