Add experimental support for PHP 7.1 and 7.2 and remove HHVM badge and test

The HHVM test on travis seems broken anyway and the badge doesnt work
anymore

Author: fgrosse

.travis.yml

@@ -3,8 +3,14 @@ sudo: false
 
 php:
   - 5.6
-  - 7
-  - hhvm
+  - 7.0
+  - 7.1
+  - 7.2
+
+matrix:
+  allow_failures:
+    - php: 7.1
+    - php: 7.2
 
 cache:
   directories:

README.md

@@ -2,7 +2,6 @@ PHPASN1
 =======
 
 [![Build Status](https://secure.travis-ci.org/fgrosse/PHPASN1.png?branch=master)](http://travis-ci.org/fgrosse/PHPASN1)
-[![HHVM Status](http://hhvm.h4cc.de/badge/fgrosse/phpasn1.png)](http://hhvm.h4cc.de/package/fgrosse/phpasn1)
 [![PHP 7 ready](http://php7ready.timesplinter.ch/fgrosse/PHPASN1/badge.svg)](https://travis-ci.org/fgrosse/PHPASN1)
 [![Coverage Status](https://coveralls.io/repos/fgrosse/PHPASN1/badge.svg?branch=master&service=github)](https://coveralls.io/github/fgrosse/PHPASN1?branch=master)