Merge pull request #1228 from mattermost/moving-api-doc

Update and rename doc/api/Overview.md to doc/developer/API-Web-Servic…

doc/README.md

@@ -27,7 +27,7 @@ Set up Mattermost in your data center
 - [Code Contribution Guidelines](developer/Code-Contribution-Guidelines.md)
 - [Developer Machine Setup](developer/Setup.md)
 - [Mattermost Style Guide](developer/Style-Guide.md)
-- [API Overview](api/Overview.md)
+- [API Overview](developer/API.md)
  - [Incoming Webhooks](integrations/webhooks/Incoming-Webhooks.md) 
 
 ## Help

doc/developer/API-Web-Service.md

@@ -1,6 +1,8 @@
-# API Overview
+# Mattermost Web Service API
 
-This provides a basic overview of the Mattermost API. All examples assume there is a Mattermost instance running at http://localhost:8065.
+This provides a basic overview of the Mattermost Web Service API. Drivers interfacing with this API are available in different languages. Current documentation focuses on the transport layer for the API and functional documentation will be developed next.  
+
+All examples assume there is a Mattermost instance running at http://localhost:8065.
 
 ## Schema