Update test runner spec (#139)

specs/TransciptTestRunner.md

@@ -28,12 +28,14 @@ Transcript based functional tests aim to allow us to test complex conversation f
 
 Here is a high level class diagram to get started
 
-![Class Diagram](media/TestRunnerClassDiagram.png)
+![Class Diagram](media/TestRunnerClassDiagram2.png)
 
 - `TestRunner`: responsible for executing the `TestScript` using the desired `TestClientBase`
-- `TestScript`: responsible for reading a transcript, converting it into a sequence of steps and returning the steps to be executed.
-- `TestClientBase`: base class for implementing channel specific test clients
+- `TranscriptConverter`: responsible for reading a transcript, converting it into a sequence of steps and returning the steps to be executed. Input: an emulator transcript file. Output: a "Test Script" file.
+- `TestClientFactory`: creates an instance of a TestClient implementation.
+- `TestClientBase`(abstract): base class for implementing channel specific test clients
 - `_XYZ_Client`: specialized client that knows how to interact with a specific channel (it should be capable of generating channel OAuthTokens, handle responses coming from that specific channel, etc.)
+- `ClientType` (enum): types are: DirectLine, Emulator, Teams
 
 ## Implementation notes
 
@@ -49,3 +51,9 @@ Here is a high level class diagram to get started
 - Do we create a tool to convert a transcript into a test script that removes some of the noise in the transcript and makes test easier to read and write?
 - Do we implement _XYZ_Options classes to configure the runner, the test script and the test client?
 - Possible feature - chaining test scripts, consider we have a welcome part that we do over and over again and want to combine with the book a flight or get weather. The welcome portion and assertions can be written once and then we can append the other scenarios. 
+
+## Test Script file
+
+It is generated by the TranscriptConverter from an Emulator transcript. The test script file contains the list of Activities found in its corresponding Emulator transcript with the following properties removed:
+* All IDs
+* All timestamps