fix more casing issues (#1496)

Author: stevengum

libraries/botframework-streaming/src/interfaces/IStreamingTransportClient.ts

@@ -6,7 +6,7 @@
  * Licensed under the MIT License.
  */
 import { IReceiveResponse } from './IReceiveResponse';
-import { StreamingRequest } from '../StreamingRequest';
+import { StreamingRequest } from '../streamingRequest';
 
 /**
  * Abstraction to define the characteristics of a streaming transport client. 

libraries/botframework-streaming/src/interfaces/IStreamingTransportServer.ts

@@ -6,7 +6,7 @@
  * Licensed under the MIT License.
  */
 import { IReceiveResponse } from './IReceiveResponse';
-import { StreamingRequest } from '../StreamingRequest';
+import { StreamingRequest } from '../streamingRequest';
 
 /**
  * Abstraction to define the characteristics of a streaming transport server. 

libraries/botframework-streaming/src/requestHandler.ts

@@ -5,7 +5,7 @@
  * Copyright (c) Microsoft Corporation. All rights reserved.
  * Licensed under the MIT License.
  */
-import { IReceiveRequest } from './Interfaces/IReceiveRequest';
+import { IReceiveRequest } from './interfaces/IReceiveRequest';
 import { StreamingResponse } from './streamingResponse';
 
 /**