Merge branch '0.12'

Author: Jeremiah VALERIE

lib/generator/.travis.yml

@@ -29,8 +29,6 @@ script: bin/phpunit --color=always -v --debug
 jobs:
     include:
         - stage: Test
-          php: 5.6
-        - php: 7.0
         - php: 7.1
         - php: 7.1
           env: COMPOSER_UPDATE_FLAGS=--prefer-lowest

lib/generator/README.md

@@ -7,10 +7,6 @@ GraphQL PHP types generator...
 [![Code Coverage](https://scrutinizer-ci.com/g/overblog/GraphQLPhpGenerator/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/overblog/GraphQLPhpGenerator/?branch=master)
 [![Build Status](https://travis-ci.org/overblog/GraphQLPhpGenerator.svg?branch=master)](https://travis-ci.org/overblog/GraphQLPhpGenerator)
 
-Requirements
-------------
-PHP >= 5.4
-
 Installation
 ------------