Fix lines order bug in the install method

cbrew

@@ -123,12 +123,12 @@ def install
       puts "Installing..."
       @pkg.install
     else
-      puts "Unpacking archive, this may take a while..."
-      system "tar", "zxf", meta[:filename]
-      puts "Installing..."
-    
-      #system "mv", "./usr/*", "./xd"
       Dir.chdir CBREW_BREW_DIR do
+        puts "Unpacking archive, this may take a while..."
+        system "tar", "zxf", meta[:filename]
+        
+        puts "Installing..."
+        
         FileUtils.mv './dlist', CBREW_CONFIG_PATH + "meta/#{@pkg.name}.directorylist"
         FileUtils.mv './filelist', CBREW_CONFIG_PATH + "meta/#{@pkg.name}.filelist"
       end