reorganize examples into folder

contracts/examples/BadPushPayments.sol

@@ -0,0 +1,21 @@
+// UNSAFE CODE, DO NOT USE!
+
+contract BadPushPayments {
+
+	address highestBidder;
+	uint highestBid;
+
+	function bid() {
+		if (msg.value < highestBid) throw;
+
+		if (highestBidder != 0) {
+      // return bid to previous winner
+			if (!highestBidder.send(highestBid)) {
+        throw;
+      }
+		}
+
+	  highestBidder = msg.sender;
+	  highestBid = msg.value;
+	}
+}