Added a permission node

.gitignore

@@ -36,4 +36,11 @@
 .DS_Store*
 ehthumbs.db
 Icon?
-Thumbs.db
+Thumbs.db
+
+# Eclipse stuff #
+#################
+bin/
+bin1/
+.classpath
+.project

src/com/exolius/simplebackup/Commands.java

@@ -17,7 +17,7 @@ public Commands(SimpleBackup plugin) {
     @Override
     public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
         if (cmd.getName().equalsIgnoreCase("sbackup")) {
-            if (sender.isOp()) {
+            if (sender.hasPermission("simplebackup.use")) {
                 new Thread(new Runnable() {
                     @Override
                     public void run() {
@@ -29,4 +29,4 @@ public void run() {
         }
         return false;
     }
-}
+}

src/plugin.yml

@@ -5,4 +5,9 @@ version: 1.4
 commands:
    sbackup:
       description: Run map backup
-      usage: /sbackup
+      usage: /sbackup
+
+permissions:
+   simplebackup.use:
+      description: Run map backup
+      default: op