Added API.md guide

Author: DiegoMzmn

README.md

@@ -1,4 +1,4 @@
-# 2019-OpenViduTeaching
+# 2019-OpenViduTeaching #
 OpenVidu application tailored for teaching activities.
 
 Check out the [Medium blog](https://medium.com/@diego.mzmn) for updates
@@ -31,6 +31,6 @@ Note that this roadmap may change throughout development.
 
 ## Development & Installation ##
 
-For information on how to get the the app working [CLICK HERE](/documentation/deploy.md)
-For information on how to develop the app [CLICK HERE](/documentation/development.md)
-
+For information on how to get the the app working [CLICK HERE](/documentation/deploy.md).
+For information on how to develop the app [CLICK HERE](/documentation/development.md).
+For information on the REST API [CLICK HERE](/documentation/api.md).

backend/src/main/java/urjc/ovteaching/rooms/controllers/OpenViduController.java

@@ -51,6 +51,11 @@ public ResponseEntity<String> createSession(@PathVariable String roomName, HttpS
 		if (room == null) {
 			return new ResponseEntity<>(HttpStatus.NOT_FOUND);
 		}
+		User user = userServ.findByName(request.getUserPrincipal().getName());
+		// User user = this.userComponent.getLoggedUser();
+		if(!room.isInRoom(user)) {
+			return new ResponseEntity<>(HttpStatus.UNAUTHORIZED);
+		}
 		try {
 			String sessionId;
 			if (!this.openViduComponent.isSessionCreated(room)) {