Tweak ujit disasm output

ujit.rb

@@ -15,13 +15,13 @@ module UJIT
     str << "\n"
 
     # Sort the blocks by increasing addresses
-    blocks.sort_by(&:address).each do |block|
-      str << "== ISEQ RANGE: [#{block.iseq_start_index},#{block.iseq_end_index}[ ".ljust(80, "=")
+    blocks.sort_by(&:address).each_with_index do |block, i|
+      str << "== BLOCK #{i+1}/#{blocks.length} ISEQ RANGE: [#{block.iseq_start_index},#{block.iseq_end_index}[ ".ljust(80, "=")
       str << "\n"
 
       cs.disasm(block.code, 0).each do |i|
         str << sprintf(
-          "\t%<address>08X:\t%<instruction>s\t%<details>s\n",
+          "  %<address>08X:  %<instruction>s\t%<details>s\n",
           address: block.address + i.address,
           instruction: i.mnemonic,
           details: i.op_str