Merge pull request #1512 from disy-mk/patch-3

Allow people to query current API version via /api

doc/api/http_api.md

@@ -61,7 +61,9 @@ Portal submits content into new blog post
 ## Usage
 
 ### API version
-The latest version is `1.2`
+The latest version is `1.2.7`
+
+The current version can be queried via /api.
 
 ### Request Format
 

src/node/handler/APIHandler.js

@@ -216,6 +216,9 @@ var version =
   }
 };
 
+// set the latest available API version here
+exports.latestApiVersion = '1.2.7';
+
 /**
  * Handles a HTTP API call
  * @param functionName the name of the called function

src/node/hooks/express/apicalls.js

@@ -57,4 +57,9 @@ exports.expressCreateServer = function (hook_name, args, cb) {
       res.end("OK");
     });
   });
+  
+  //Provide a possibility to query the latest available API version
+  args.app.get('/api', function (req, res) {
+     res.json({"currentVersion" : apiHandler.latestApiVersion});
+  });
 }