Implemented bukkit versioning

By: Nathan Adams <dinnerbone@dinnerbone.com>

paper-server/src/main/java/org/bukkit/craftbukkit/util/Versioning.java

@@ -0,0 +1,29 @@
+package org.bukkit.craftbukkit.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import org.bukkit.Bukkit;
+
+public final class Versioning {
+    public static String getBukkitVersion() {
+        String result = "Unknown-Version";
+        
+        InputStream stream = Bukkit.class.getClassLoader().getResourceAsStream("META-INF/maven/org.bukkit/bukkit/pom.properties");
+        Properties properties = new Properties();
+        
+        if (stream != null) {
+            try {
+                properties.load(stream);
+                
+                result = properties.getProperty("version");
+            } catch (IOException ex) {
+                Logger.getLogger(Versioning.class.getName()).log(Level.SEVERE, "Could not get Bukkit version!", ex);
+            }
+        }
+        
+        return result;
+    }
+}