Merge pull request #2777 from spinside/patch-2

Update README.md

README.md

@@ -36,8 +36,19 @@ To deploy the cluster you can use :
 
 ### Vagrant
 
-    # Simply running `vagrant up` (for tests purposes)
-    vagrant up
+   For Vagrant we need to install python dependencies for provisioning tasks.\
+   Check if Python and pip are installed: 
+```sh
+python -v && pip -v
+```
+    
+   If this returns the version of the software, you're good to go. If not, download and install Python from here https://www.python.org/downloads/source/
+   Install the necessary requirements
+    
+```sh
+sudo pip install -r requirements.txt
+vagrant up
+```
 
 Documents
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