Resolve "Implement bdd tests in cucumber"

Closes #3 (closed)

test/mock/messages/Message_VehicleMission.json

 {
-  "message_type": "VehicleMission",
   "metadata": {
     "source": "ae",
     "destination": "soar.po.ecosub.eco1",
     "delivery_type": "publish",
     "message_id": "test"
   },
-  "operator_id": "po",
-  "vehicle_id": "eco1",
-  "coordinates": {
-    "latitude": 59.234,
-    "longitude": -10.432,
-    "depth": 50,
-    "projection": 4326
+  "payload": {
+    "message_type": "VehicleMission",
+    "operator_id": "po",
+    "vehicle_id": "eco1",
+    "coordinates": {
+      "latitude": 59.234,
+      "longitude": -10.432,
+      "depth": 50,
+      "projection": 4326
+    }
   }
 }

test/mock/messages/Message_VehicleMissionActions.json

 {
-  "message_type": "VehicleMission",
   "metadata": {
     "source": "ae",
     "destination": "soar.po.ecosub.eco1",
     "delivery_type": "publish",
     "message_id": "test"
   },
-  "operator_id": "po",
-  "vehicle_id": "eco1",
-  "coordinates": {
-    "latitude": 59.234,
-    "longitude": -10.432,
-    "depth": 50,
-    "projection": 4326
-  },
-  "actions": [
-    {
-      "action_type": "GoToWaypoint",
-      "coordinates": {
-        "latitude": 59.234,
-        "longitude": -10.432,
-        "depth": 50,
-        "projection": 4326
-      }
+  "payload": {
+    "message_type": "VehicleMission",
+    "operator_id": "po",
+    "vehicle_id": "eco1",
+    "coordinates": {
+      "latitude": 59.234,
+      "longitude": -10.432,
+      "depth": 50,
+      "projection": 4326
     },
-    {
-      "action_type": "DescendToAltitude",
-      "coordinates": {
-        "latitude": 59.234,
-        "longitude": -10.432,
-        "altitude": 50,
-        "projection": 4326
+    "actions": [
+      {
+        "action_type": "GoToWaypoint",
+        "coordinates": {
+          "latitude": 59.234,
+          "longitude": -10.432,
+          "depth": 50,
+          "projection": 4326
+        }
+      },
+      {
+        "action_type": "DescendToAltitude",
+        "coordinates": {
+          "latitude": 59.234,
+          "longitude": -10.432,
+          "altitude": 50,
+          "projection": 4326
+        }
       }
-    }
-  ]
+    ]
+  }
 }

test/mock/messages/Message_VehicleStatus.json

 {
-  "message_type": "VehicleStatus",
   "metadata": {
     "source": "ae",
     "destination": "soar.po.ecosub.eco1",
     "delivery_type": "publish",
     "message_id": "test"
   },
-  "operator_id": "po",
-  "vehicle_id": "eco1",
-  "coordinates": {
-    "latitude": 57.234,
-    "longitude": -8.432,
-    "depth": 50,
-    "projection": 4326
-  },
-  "battery_percentage": 64
-}
+  "payload": {
+    "message_type": "VehicleStatus",
+    "operator_id": "po",
+    "vehicle_id": "eco1",
+    "coordinates": {
+      "latitude": 57.234,
+      "longitude": -8.432,
+      "depth": 50,
+      "projection": 4326
+    },
+    "battery_percentage": 64
+  }
+}
\ No newline at end of file

README.md

 I've not installed it as a runtime dependency because in nuxt you need to 
 use @nuxtjs/axios instead.
 
-## Install
+## Setup 
+
+```
+yarn install
+```
+
+## Test 
+
+The tests are written in [cucumber](https://cucumber.io/docs/installation/javascript/)
+
+This means we can have a common suite of [gherkin](https://github.com/cucumber/gherkin)
+tests across adapter ports written in multiple languages. 
+
+```
+yarn test
+```
+
+## Installing in your project 
 
 ### Yarn