add conflict specification re php-http/message-factory

Douglas Greenshields · Douglas Greenshields · commit 3005f115115b · 2017-07-11T18:12:40.000+01:00
diff --git a/composer.json b/composer.json
@@ -23,6 +23,9 @@
   "require-dev": {
     "phpunit/phpunit": "~4"
   },
+  "conflict": {
+    "php-http/message-factory": "<1.0.2"
+  },
   "license": "MIT",
   "authors": [
     {
