Added stubs for buying all cornerpieces

Author: Kyle Grage

include/Player.h

@@ -69,6 +69,12 @@ class Player {
 
     bool canBuyRoad();
     bool buyRoad();
+    bool canBuySettlement();
+    bool buySettlement();
+    bool canBuyCity();
+    bool buyCity();
+    bool canBuyWonder();
+    bool buyWonder();
 
     void setWoodModifier();
     void setBrickModifier();

src/Player.cpp

@@ -116,6 +116,30 @@ bool Player::buyRoad(){
 	return false;
 }
 
+bool Player::canBuySettlement(){
+	return false;
+}
+
+bool Player::buySettlement(){
+	return false;
+}
+
+bool Player::canBuyCity(){
+	return false;
+}
+
+bool Player::buyCity(){
+	return false;
+}
+
+bool Player::canBuyWonder(){
+	return false;
+}
+
+bool Player::buyWonder(){
+	return false;
+}
+
 
 
 /**