Share-Style.md

 Make a share-style BMB.
 
+<img src="https://github.com/Nightonke/BoomMenu/blob/master/Pictures/share-example.gif">
+
+###Share Style
+BMB is able to act as a share-action-button. Check the [demo](https://github.com/Nightonke/BoomMenu/blob/master/app/src/main/java/com/nightonke/boommenusample/ShareActivity.java) for details.
+
+1. Set the piece-place-enum of BMB to share-style.
+ ```
+ bmb1.setPiecePlaceEnum(PiecePlaceEnum.Share);
+ ```
+ 
+ Or in .xml:
+ ```
+ app:bmb_piecePlaceEnum="piecePlace_share"
+ ```  
+
+2. Add builders.  
+ Notice that the number of builders must in range [3, 9]. And don't try to use `PiecePlaceEnum.Share.pieceNumber()` to make a add-builder-loop, because `PiecePlaceEnum.Share.pieceNumber()` equals -1. You should use `bmb.getButtonPlaceEnum().buttonNumber()`:
+
+ ```
+ for (int i = 0; i < bmb.getButtonPlaceEnum().buttonNumber(); i++)
+     bmb.addBuilder(BuilderManager.getTextInsideCircleButtonBuilder());
+ ```
+
+3. (Optional)Customize your share style BMB.  
+
+ ```
+ bmb.setShareLineLength(45);
+ bmb.setShareLineWidth(5);
+ bmb.setDotRadius(12);
+ bmb.setShareLine1Color(Color.BLACK);
+ bmb.setShareLine2Color(Color.BLACK);
+ ```
+ Or in .xml:
+ ```
+ app:bmb_sharedLineLength="10dp"
+ app:bmb_shareLineWidth="2dp"
+ app:bmb_dotRadius="4dp"
+ app:bmb_shareLine1Color="@android:color/holo_orange_light"
+ app:bmb_shareLine2Color="@android:color/holo_orange_dark"
+ ```
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