adding readme.md files to the package json

dist/preview release/gui/package.json

@@ -15,6 +15,7 @@
         "babylon.gui.min.js",
         "babylon.gui.d.ts",
         "babylon.gui.module.d.ts",
+        "readme.md",
         "package.json"
     ],
     "typings": "babylon.gui.module.d.ts",

dist/preview release/loaders/package.json

@@ -14,6 +14,7 @@
         "babylonjs.loaders.js",
         "babylonjs.loaders.min.js",
         "babylonjs.loaders.module.d.ts",
+        "readme.md",
         "package.json"
     ],
     "typings": "babylonjs.loaders.module.d.ts",

dist/preview release/materialsLibrary/package.json

@@ -14,6 +14,7 @@
         "babylonjs.materials.js",
         "babylonjs.materials.min.js",
         "babylonjs.materials.module.d.ts",
+        "readme.md",
         "package.json"
     ],
     "typings": "babylonjs.materials.module.d.ts",

dist/preview release/postProcessesLibrary/package.json

@@ -14,6 +14,7 @@
         "babylonjs.postProcess.js",
         "babylonjs.postProcess.min.js",
         "babylonjs.postProcess.module.d.ts",
+        "readme.md",
         "package.json"
     ],
     "typings": "babylonjs.postProcess.module.d.ts",

dist/preview release/proceduralTexturesLibrary/package.json

@@ -14,6 +14,7 @@
         "babylonjs.proceduralTextures.js",
         "babylonjs.proceduralTextures.min.js",
         "babylonjs.proceduralTextures.module.d.ts",
+        "readme.md",
         "package.json"
     ],
     "typings": "babylonjs.proceduralTextures.module.d.ts",

dist/preview release/serializers/package.json

@@ -14,6 +14,7 @@
         "babylonjs.serializers.js",
         "babylonjs.serializers.min.js",
         "babylonjs.serializers.module.d.ts",
+        "readme.md",
         "package.json"
     ],
     "typings": "babylonjs.serializers.module.d.ts",