fix indent of sample in readme

README.md

@@ -39,22 +39,18 @@ SwiftyStoreKit supports this by calling `completeTransactions()` when the app st
 
 ```swift
 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
-
-	SwiftyStoreKit.completeTransactions(atomically: true) { purchases in
-	
-	    for purchase in purchases {
-	
-	        if purchase.transaction.transactionState == .purchased || purchase.transaction.transactionState == .restored {
-	
-               if purchase.needsFinishTransaction {
-                   // Deliver content from server, then:
-                   SwiftyStoreKit.finishTransaction(purchase.transaction)
-               }
-               print("purchased: \(purchase)")
-	        }
-	    }
-	}
- 	return true
+    SwiftyStoreKit.completeTransactions(atomically: true) { purchases in
+        for purchase in purchases {
+            if purchase.transaction.transactionState == .purchased || purchase.transaction.transactionState == .restored {
+                if purchase.needsFinishTransaction {
+                    // Deliver content from server, then:
+                    SwiftyStoreKit.finishTransaction(purchase.transaction)
+                }
+                print("purchased: \(purchase)")
+            }
+        }
+    }
+    return true
 }
 ```