Change logs:

1. Update README.md file to contain trkd_Wsstreaming.py file

Author: Wasin Waeosri

README.md

@@ -4,7 +4,7 @@ The [Thomson Reuters Knowledge Direct (TRKD) API](https://developers.thomsonreut
 
 TRKD offers a wide range of Thomson Reuters' information and services delivered in a request-response scenario via web services using today's industry standard protocols (SOAP/XML and REST/JSON). Connectivity can be via HTTP and HTTPS, over the Internet or Delivery Direct. All data are snapshot (non-streaming) data.
 
-This is an example project that shows how to implement TRKD HTTP JSON Client with python. This project contains the following example scripts for each TRKD services
+This is an example project that shows how to implement TRKD HTTP JSON client and TRKD Streaming client with Python programming lanugage. This project contains the following example scripts for each TRKD services
 - trkd_authen.py: An example application that shows how to authenticate with TRKD service
 - trkd_quote.py: An example application that shows how to subscribe (all fields and specific fields) the Quote data from TRKD service
 - trkd_newsheadline.py: An example application that shows how to subscribe the News Headline data from TRKD service
@@ -13,13 +13,17 @@ This is an example project that shows how to implement TRKD HTTP JSON Client wit
 - trkd_interday.py: An example application that shows how to subscribe the Interday Time-series data from TRKD service
 - trkd_onlinereport.py: An example application that shows how to subscribe the Online Report data from TRKD service
 - trkd_chart.py: An example application that shows how to subscribe and download the Chart image data from TRKD service
+- trkd_wsstreaming.py: An example application that show how to subscribe the Quote data from TRKD Streming service via a WebSocket connection
+- requestments.txt: A requirement file contains a list of required libraries. 
 - docs\TRKD_REST_with_Python.docx: A document that describes the trkd_authen.py and trkd_quote.py applications
 
 
 ## Prerequisite
 The following softwares are required to use this script
 - Python 3 
 - The [requests](http://docs.python-requests.org/en/master/) library
+- The [websocket-client](https://pypi.org/project/websocket-client/) library (*version 0.49 or greater*, for trkd_wsstreaming.py application only)
+- The [python-dateutil](https://pypi.org/project/python-dateutil/) library (for trkd_wsstreaming.py application only)
 
 All scripts support Python 3 and not compatible with Python 2.
 
@@ -34,46 +38,50 @@ The best way is via the pip package management tool
 1. export <Python_folder>\Scripts to your OS PATH environment
 2. call pip command to install requests
 	```
-	$>pip install requests
+	$>pip install -r requestments.txt
 	```
 3. If you are behind proxy, set the proxy first
 	```
 	export https_proxy="http://<proxy.server>:<port>"
-	$>pip install requests
+	$>pip install -r requestments.txt
 	```
 
+*Note*: If you aim to use only TRKD HTTP JSON services, you can just install requests library via ```pip install requests``` command.
+
 ## Release Note
 - Version 1: 6 Sep 2016
-    - trkd_authen.py
-	- trkd_quote.py
+    - trkd_authen.py.
+	- trkd_quote.py.
 - Version 1.0.1: 7 Sep 2016
-	- trkd_newsheadline.py
+	- trkd_newsheadline.py.
 	- changed code structure to separate call http request
 - Version 1.0.2: 19 Sep 2016
-	- trkd_newsstory.py
+	- trkd_newsstory.py.
 - version 1.0.3: 22 Sep 2016
-	- trkd_intraday.py
-	- trkd_interday.py
-	- trkd_onlinereport.py
-	- trkd_chart.py
+	- trkd_intraday.py.
+	- trkd_interday.py.
+	- trkd_onlinereport.py.
+	- trkd_chart.py.
 - version 1.0.4: 28 Oct 2016
-	- docs\TRKD_REST_with_Python.docx
-	- revise some code
+	- docs\TRKD_REST_with_Python.docx.
+	- revise some code.
 - version 1.0.5: 27 Apr 2017
-	- revies README.md to support markdown
+	- revies README.md to support markdown.
 - version 1.0.6: 3 May 2017
-	- revies README.md
-	- modify trkd_authen.py
-	- modify trkd_quote.py
+	- revies README.md.
+	- modify trkd_authen.py.
+	- modify trkd_quote.py.
 - version 1.0.7: 9 May 2017
-	- revise README.md
-	- modify the rest of application files
+	- revise README.md.
+	- modify the rest of application files.
 - version 1.0.7: 31 Aug 2017
 	- revise README.md
 - version 1.0.8: 04 Sep 2017
-	- Port all scripts to support Python 3
+	- Port all scripts to support Python 3.
 	- Fix the issue that some scripts still send request message to the old REST endpoint.
 - version 1.0.9: 26 Jan 2018
-	- Add debug log for checking outgoing message (disabled by default)
+	- Add debug log for checking outgoing message (disabled by default).
 - version 1.0.10: 9 Aug 2018
-	- remove all ```is not None``` statements and make them a bit more **Pythonic**
+	- remove all ```is not None``` statements and make them a bit more **Pythonic**.
+- version 1.0.11: January 2019
+	- Add trkd_wsstreaming.py application for TRKD Streaming service.