Update README.md (#374)

Author: MatthieuJnon

README.md

@@ -20,6 +20,11 @@
 <div align="center">
 <img align="center" src="./rasa_webchat.gif" alt="demonstration">
 </div>
+<br />
+
+### ⚠️ Version 1.0.1 of the rasa webchat is made to work with version 2.3.x and 2.4.x of rasa. Use 1.0.0 for other rasa versions.
+
+<br />
 
 ## Features
 - Text Messages
@@ -49,7 +54,8 @@ In your `<body/>`:
   let e = document.createElement("script"),
     t = document.head || document.getElementsByTagName("head")[0];
   (e.src =
-    "https://cdn.jsdelivr.net/npm/rasa-webchat/lib/index.js"),
+    "https://cdn.jsdelivr.net/npm/rasa-webchat@1.x.x/lib/index.js"),
+    // Replace 1.x.x with the version that you want
     (e.async = !0),
     (e.onload = () => {
       window.WebChat.default(
@@ -283,4 +289,4 @@ Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
-limitations under the License.(C) 2021 Dialogue Technologies Inc. All rights reserved.
+limitations under the License.(C) 2021 Dialogue Technologies Inc. All rights reserved.