Add attribute to select initial expanded mode

Author: cachapa

expandlayout-library/res/values/attrs.xml

@@ -3,6 +3,7 @@
 
     <declare-styleable name="ExpandableLayout">
         <attr name="canExpand" format="boolean" />
+        <attr name="expanded" format="boolean" />
     </declare-styleable>
 
 </resources>

expandlayout-library/src/com/sherlock/expandlayout/ExpandableLayout.java

@@ -458,6 +458,8 @@ public LayoutParams(Context c, AttributeSet attrs) {
 					R.styleable.ExpandableLayout);
 			canExpand = a.getBoolean(R.styleable.ExpandableLayout_canExpand,
 					false);
+			isExpanded = a.getBoolean(R.styleable.ExpandableLayout_expanded,
+					false);
 			originalHeight = this.height;
 			a.recycle();
 		}