Introduce a composer.lock

Author: ahocquard

.gitignore

@@ -1,6 +1,5 @@
 bin
 vendor
-composer.lock
 docker-compose.yml
 tests/etc/parameters.yml
 phpspec.yml

composer.json

@@ -24,7 +24,7 @@
     "psr/http-message": "^1.0",
     "php-http/httplug": "^2.0",
     "php-http/message": "^1.7",
-    "php-http/discovery": "^1.5",
+    "php-http/discovery": "^1.6",
     "php-http/message-factory": "^v1.0",
     "php-http/multipart-stream-builder": "^1.0",
     "php-http/client-implementation": "^1.0"