security_barrier_camera: threadPull->threadPool, update README.md

Author: Wovchena

demos/security_barrier_camera_demo/README.md

@@ -43,9 +43,7 @@ At the end of the sequence, the `VideoFrame` is destroyed and the sequence start
 
 Running the application with the <code>-h</code> option yields the following usage message:
 ```sh
-[ INFO ] InferenceEngine:
-    API version ............ <version>
-    Build .................. <number>
+[ INFO ] InferenceEngine: <version>
 
 interactive_vehicle_detection [OPTION]
 Options:

demos/security_barrier_camera_demo/common.hpp

@@ -56,13 +56,13 @@ struct HigherPriority {
 class Worker {
 public:
     explicit Worker(unsigned threadNum):
-        threadPull(threadNum), running{false} {}
+        threadPool(threadNum), running{false} {}
     ~Worker() {
         stop();
     }
     void runThreads() {
         running = true;
-        for (std::thread& t : threadPull) {
+        for (std::thread& t : threadPool) {
             t = std::thread(&Worker::threadFunc, this);
         }
     }
@@ -100,7 +100,7 @@ class Worker {
         tasksCondVar.notify_all();
     }
     void join() {
-        for (auto& t : threadPull) {
+        for (auto& t : threadPool) {
             t.join();
         }
         if (nullptr != currentException) {
@@ -112,7 +112,7 @@ class Worker {
     std::condition_variable tasksCondVar;
     std::set<std::shared_ptr<Task>, HigherPriority> tasks;
     std::mutex tasksMutex;
-    std::vector<std::thread> threadPull;
+    std::vector<std::thread> threadPool;
     std::atomic<bool> running;
     std::exception_ptr currentException;
     std::mutex excpetionMutex;