Update readme.md to reflect new nomencleture for DM

readme.md

@@ -77,8 +77,8 @@ and whoever needs the data is allowed to read it. Each message is required to ha
 ```
 ## Dispatch System (DS)
 
-The DS is divided into two submodules the **Dispatch Manager** and the **Dispatch Daemon**. The Dispatcher runs on the Master node while the Dispatch Daemon 
-runs on each Worker nodes. When a request arrives at the dispatcher, it queries the RM for resources and on receiving the resource requests the Dispatch Daemon 
+The DS is divided into two submodules the **Dispatch Manager** and the **Dispatch Daemon**. The Dispatch Manager runs on the Master node while the Dispatch Daemon 
+runs on each Worker nodes. When a request arrives at the Dispatch Manager, it queries the RM for resources and on receiving the resource requests the Dispatch Daemon 
 to run and execute the function on the specified worker node.
 
 ### Directory Structure
@@ -95,7 +95,7 @@ to run and execute the function on the specified worker node.
 │   ├── local_repository
 │   ├── package.json
 │   └── package-lock.json
-├── dispatcher
+├── dispatch_manager
 │   ├── index.js
 │   ├── isolate.js
 │   ├── lib.js
@@ -125,14 +125,14 @@ to run and execute the function on the specified worker node.
 
 ### Internal Communication Interfaces
 
-#### Dispatcher
+#### Dispatch Manager (DM)
 
-Internally DM uses Apache Kafka for interaction between the Dispatcher and the Dispatch Agents, while the messages are in JSON format. 
+Internally DM uses Apache Kafka for interaction between the Dispatch Manager (DM) and the Dispatch Agents, while the messages are in JSON format. 
 
-Every Dispatch Agent listens on a topic which is its own UID (Currently the primary IP Address), the Dispatcher listens on the topics *"response"* and 
+Every Dispatch Agent listens on a topic which is its own UID (Currently the primary IP Address), the Dispatch Manager listens on the topics *"response"* and 
 *"heartbeat"*.
 
-- **Request Message:** When a request is received at the Dispatcher, it directs the Dispatch Agent to start a worker environment. A message is sent via the 
+- **Request Message:** When a request is received at the Dispatch Manager, it directs the Dispatch Agent to start a worker environment. A message is sent via the 
 - chose Worker's ID topic. \
 Format:
 
@@ -152,7 +152,7 @@ Format:
   function_id: 'onetime unique ID' }
 ```
 
-- **Heartbeat Message:** The Dispatch Daemons also publish a periodic Heartbeat message back to the Dispatcher as a liveness test.\
+- **Heartbeat Message:** The Dispatch Daemons also publish a periodic Heartbeat message back to the Dispatch Manager as a liveness test.\
 Format:
 
 ```javascript