Update composer.json

Author: slepic

composer.json

@@ -5,7 +5,7 @@
     "require": {
         "php": "^7.0",
         "psr/http-client": "^1.0",
-        "slepic/http-transfer": "dev-master"
+        "slepic/http-transfer": "^0.1"
     },
     "autoload": {
         "psr-4": {