Update embedded_networking_and_communications.yaml

src/embedded_networking_and_communications.yaml

 unit: Embedded Networking and Communications
 unit_id: embedded_networking_and_communications.md
-version: 2018
+version: 2019
 tasks:
 - name: Embedded Networking and Communications
   description: |
+    Group assignment:
     * Send a message between two projects (group project)
+    Individual assignment:
     * Design and build a wired &/or wireless network connecting at least two processors
   outcomes:
   - Demonstrate workflows used in network design and construction
@@ -17,8 +19,7 @@ tasks:
 faq: |
   ### Can we use arduino/commercial boards for networking?
   > Answer:
-  1. It depends on the case: you can use commercial boards for wireless devices. But you can’t use Arduino or similar commercial microcontroller boards because they can be made in the fab lab. For this week, you can use the original satcha-kit/fab-kit/fabduino.
-
+  1. You can not use Arduino or similar commercial microcontroller boards. You can use a commercial wireless module in your own PCB. For this week, you can use the original satcha-kit/fab-kit/fabduino.
   ### Must each board have a unique identity?
   > Answer:
   1. It does not have to be hard-coded but you must use some form of addressing.