Add 2.0-dev branch alias to composer.json

composer.json

@@ -40,5 +40,10 @@
             "PicoPluginInterface": "lib/",
             "AbstractPicoPlugin": "lib/"
         }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-pico-1.1": "2.0-dev"
+        }
     }
 }