Update to 20.1.4 (#424)

Co-authored-by: dxvladislavvolkov <vladislavvolkov@Vladislavs-MacBook-Pro.local>

package.json

@@ -3,7 +3,7 @@
     "name": "Developer Express Inc."
   },
   "name": "devextreme-react",
-  "version": "19.2.9",
+  "version": "20.1.4",
   "description": "DevExtreme React UI and Visualization Components",
   "repository": {
     "type": "git",
@@ -15,7 +15,7 @@
     "prop-types": "^15.6.1"
   },
   "peerDependencies": {
-    "devextreme": "~19.2.9",
+    "devextreme": "~20.1.4",
     "react": "^16.2.0",
     "react-dom": "^16.2.0"
   },
@@ -28,7 +28,7 @@
     "css-loader": "^2.1.0",
     "dasherize": "^2.0.0",
     "del": "^3.0.0",
-    "devextreme": "~19.2.9",
+    "devextreme": "~20.1.4",
     "devextreme-internal-tools": "stable",
     "dot": "^1.1.2",
     "enzyme": "^3.7.0",
@@ -57,7 +57,7 @@
     "webpack-dev-server": "^3.1.14"
   },
   "scripts": {
-    "start": "npm run clean && npm run generate && npm run serve",
+    "start": "npm run build && npm run serve",
     "serve": "webpack-dev-server",
     "lint": "gulp lint",
     "build": "npm run clean && npm run lint && npm run generate",
@@ -66,7 +66,7 @@
     "test": "jest",
     "test-watch": "jest --watch",
     "pack": "gulp npm.pack",
-    "update-integration-meta": "dx-tools update-integration-meta --output-path ./tools/integration-data.json"
+    "update-integration-meta": "dx-tools update-integration-meta --output-path=./tools/integration-data.json"
   },
   "keywords": [
     "react",