hash fix

Author: benjamin538

src/main/java/com/benjamin538/Main.java

@@ -35,7 +35,11 @@
     version = "geode 3.2.0",
     mixinStandardHelpOptions = true
 )
-public class Main {
+public class Main implements Runnable {
+    @Override
+    public void run() {
+        CommandLine.usage(this, System.out);
+    }
     public static void main(String[] args) {
         new CommandLine(new Main()).execute(args);
     }

src/main/java/com/benjamin538/index/IndexInstall.java

@@ -88,7 +88,7 @@ public void run() {
                             byte[] data = Files.readAllBytes(modFile);
                             byte[] hash = MessageDigest.getInstance("SHA-256").digest(data);
                             String localHash = String.format("%064x", new BigInteger(1, hash));
-                            if (modHash != localHash) {
+                            if (!modHash.equals(localHash)) {
                                 Files.delete(modFile);
                                 logger.fatal("Downloaded file doesn't match expected hash\n" + modHash + "\nvs\n" + localHash + "\nTry again, if this issue persists, open issue on GitHub:\nhttps://github.com/benjamin538/geode-cli/issues/new");
                             }