Simple-Circle-Button.md

@@ -43,6 +43,7 @@ for (int i = 0; i < bmb.getPiecePlaceEnum().pieceNumber(); i++) {
             // Whether the image-view should rotate.
             .rotateImage(false)
 ```
+#### Shadow
 ```
             // Whether the boom-button should have a shadow effect.
             .shadowEffect(true)
@@ -67,6 +68,7 @@ for (int i = 0; i < bmb.getPiecePlaceEnum().pieceNumber(); i++) {
             // Set the color of the shadow of boom-button.
             .shadowColor(Color.parseColor("#ee000000"))
 ```
+#### Image
 ```
             // Set the image resource when boom-button is at normal-state.
             .normalImageRes(R.drawable.jellyfish)
@@ -104,6 +106,7 @@ for (int i = 0; i < bmb.getPiecePlaceEnum().pieceNumber(); i++) {
             // image-view content 10-pixel padding to itself.
             .imagePadding(new Rect(0, 0, 0, 0))
 ```
+#### Button
 ```
             // Whether the boom-button should have a ripple effect.
             .rippleEffect(true)