Fix CI (#2)

Author: anthonykgross

.travis.yml

@@ -1,11 +1,12 @@
 language: php
 
-php:
-  - 7.2
-  - 7.3
-  - 7.4
-  - 8.0
-  - hhvm
+matrix:
+  include:
+    - php: 7.2
+    - php: 7.3
+    - php: 7.4
+#    - php: 8.0
+#    - php: hhvm
 
 before_script:
   - composer install --no-interaction --prefer-source --dev

README.md

@@ -54,12 +54,15 @@ $resolution = \Algorithm\DependencyResolver::resolve($tree);
 - <https://www.electricmonk.nl/log/2008/08/07/dependency-resolving-algorithm/>
 - <http://mamchenkov.net/wordpress/2016/11/22/dependency-resolution-with-graphs-in-php/>
 
-## Creator
+## Contributors
 **Anthony K GROSS**
 - <http://anthonykgross.fr>
 - <https://twitter.com/anthonykgross>
 - <https://github.com/anthonykgross>
 
+**Joshua Behrens**
+- <https://github.com/JoshuaBehrens>
+
 ## Copyright and license
-Code and documentation copyright 2017. Code released under [the MIT license](https://github.com/anthonykgross/dependency-resolver/blob/master/LICENSE).
+Code and documentation copyright 2020. Code released under [the MIT license](https://github.com/anthonykgross/dependency-resolver/blob/master/LICENSE).