Update example animations to use new test strings and add delays for better visibility

Author: jasonacox

examples/TM1637-6Digit-NonBlockingAnimate/TM1637-6Digit-NonBlockingAnimate.ino

@@ -161,12 +161,14 @@ void loop()
                 Serial.println("Animated Short String Scroll from SRAM");
                 // non-blocking scrolling of a short string
                 display.startStringScroll("S-Test", 200);
+                delay(TEST_DELAY);
                 break;
             case 6:
                 Serial.println("");
                 Serial.println("Animated Short String Scroll from PROGMEM");
                 // non-blocking scrolling of a short string
-                display.startStringScroll_P("P-Test", 200);
+                display.startStringScroll_P("F-Test", 200);
+                delay(TEST_DELAY);
                 break;
             default:
                 display.showString("The");

examples/TM1637-NonBlockingAnimate/TM1637-NonBlockingAnimate.ino

@@ -171,13 +171,15 @@ void loop()
         Serial.println("");
         Serial.println("Animated Short String Scroll from SRAM");
         // non-blocking scrolling of a short string
-        display.startStringScroll("STAT", 200);
+        display.startStringScroll("SRAM", 200);
+        delay(TEST_DELAY);
         break;
       case 6:
         Serial.println("");
         Serial.println("Animated Short String Scroll from PROGMEM");
         // non-blocking scrolling of a short string
-        display.startStringScroll_P("PROG", 200);
+        display.startStringScroll_P("FLAS", 200);
+        delay(TEST_DELAY);
         break;
       default:
         display.showString("The");