do not resetProgress on rotation

Author: petzel

app/src/main/java/com/codepath/customprogressbar/MainActivity.java

@@ -21,7 +21,10 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         ButterKnife.inject(this);
-        resetProgress();
+
+        if (savedInstanceState == null) {
+            resetProgress();
+        }
     }
 
     @OnClick(R.id.resetProgressBtn)