fixed concurrent incrementation problems

src/main/scala/org/tbasket/handler/IncrementHandler.scala

@@ -7,16 +7,16 @@ import java.util.concurrent.atomic.AtomicInteger
 
 object IncrementHandler extends APIRequestHandler {
 
-    private val i = new AtomicInteger(0)
+    private val counter = new AtomicInteger(0)
 
-    def getCounter: Int = i.get()
+    def getCounter: Int = counter.get()
 
     override def get(request: Request): Response = {
-        Response.json(s"{\"value\": $i}")
+        Response.json(s"{\"value\": ${counter.get()}}")
     }
 
     override def post(request: Request): Response = {
-        i.incrementAndGet()
+        val i = counter.incrementAndGet()
         println(s"Counter is now $i")
         Response.ok
     }

src/test/scala/org/tbasket/test/IncrementRequestHandler.scala

@@ -18,6 +18,8 @@ class IncrementRequestHandler {
         Assertions.assertEquals(last + 1, IncrementHandler.getCounter)
     }
 
+    
+
     @Test
     def testGetIncrement(): Unit = {
         val counter  = IncrementHandler.getCounter