change sudo to become and update readme

README.md

@@ -8,7 +8,7 @@ generate.py is a python program that generates a vagrant source file from a defi
 ### Usage:
 1. Clone the project.
 2. Navigate to the project folder.
-3. Type `$ python generate.py yaml_file.yaml`. There is a test yaml file in the repository called test.yaml.
+3. Type `$ python3 generate.py yaml_file.yaml`. There is a test yaml file in the repository called test.yaml.
 4. Run `$ vagrant up`
 
 ### Input yaml file structure

templates/host

@@ -5,7 +5,7 @@
   tasks:
 
   - name: Change default gateway
-    sudo: yes
+    become: yes
     command: route add default gw {{ host.router_ip }} enp0s8
 
 {% endfor %}

templates/router

@@ -5,13 +5,13 @@
   tasks:
 
   - name: Enable IP forwarding
-    sudo: yes
+    become: yes
     copy:
       dest: "/etc/sysctl.conf"
       content: "net.ipv4.ip_forward=1"
 
   - name: Restarting procps service
-    sudo: yes
+    become: yes
     command: /etc/init.d/procps restart
 
 {% endfor %}