added inqueue placeholder

src/main/java/us/ajg0702/queue/spigot/Placeholders.java

@@ -171,6 +171,9 @@ public class Placeholders extends PlaceholderExpansion {
     		if(identifier.equalsIgnoreCase("position") || identifier.equalsIgnoreCase("of")) {
     			return "None";
     		}
+    		if(identifier.equalsIgnoreCase("inqueue")) {
+    			return "false";
+    		}
     	}
     	
 
@@ -190,6 +193,10 @@ public class Placeholders extends PlaceholderExpansion {
     		plugin.sendMessage(player, "positionof", "");
     		return null;
     	}
+    	if(identifier.equalsIgnoreCase("inqueue")) {
+    		plugin.sendMessage(player, "inqueue", "");
+    		return null;
+    	}
         
         
         return null;