Udpate READMEs with git clone command

openvidu-basic-dotnet/README.md

@@ -9,5 +9,7 @@ Prerequisites:
 Run the application:
 
 ```
+git clone git@github.com:OpenVidu/openvidu-tutorials.git
+cd openvidu-tutorials/openvidu-basic-dotnet
 dotnet run
 ```

openvidu-basic-java/README.md

@@ -12,5 +12,7 @@ Prerequisites:
 To run the application:
 
 ```
+git clone git@github.com:OpenVidu/openvidu-tutorials.git
+cd openvidu-tutorials/openvidu-basic-java
 mvn spring-boot:run
 ```

openvidu-basic-node/README.md

@@ -17,5 +17,8 @@ npm install
 Run the application:
 
 ```
+git clone git@github.com:OpenVidu/openvidu-tutorials.git
+cd openvidu-tutorials/openvidu-basic-node
+npm i
 node index.js
 ```

openvidu-basic-python/README.md

@@ -6,6 +6,13 @@ Prerequisites:
 
 - [Python 3](https://www.python.org/downloads/)
 
+Download repository:
+
+```
+git clone git@github.com:OpenVidu/openvidu-tutorials.git
+cd openvidu-tutorials/openvidu-basic-python
+```
+
 Create a python3 environment and activate it:
 
 ```