update: no vue-2 compatability (doesn't work with current build)

* README.md

package.json

@@ -15,14 +15,12 @@
   "module": "dist/revue-flow.umd.js",
   "types": "dist/index.d.ts",
   "files": [
-    "dist",
-    "nocss"
+    "dist"
   ],
   "scripts": {
     "dev": "vite",
     "build": "vue-tsc --noEmit && vite build",
     "build:dist": "rollup -c --environment NODE_ENV:production",
-    "build:app": "vite build -c vite.config.app.ts",
     "serve": "vite preview",
     "prepublishOnly": "yarn build:dist",
     "test": "exit 0;",
@@ -35,8 +33,7 @@
     "d3-selection": "^3.0.0",
     "d3-zoom": "^3.0.0",
     "fast-deep-equal": "^3.1.3",
-    "pinia": "^2.0.0-beta.3",
-    "vue-demi": "latest"
+    "pinia": "^2.0.0-beta.3"
   },
   "devDependencies": {
     "@babel/core": "^7.14.6",
@@ -76,8 +73,7 @@
     "vue-tsc": "^0.0.24"
   },
   "peerDependencies": {
-    "@vue/composition-api": "^1.0.0-rc.13",
-    "vue": "^2.6.0 || >=3.0.5"
+    "vue": ">=3.0.5"
   },
   "publishConfig": {
     "access": "public",