Clean up variable name from fix for #6, to match naming convention

Author: ajburley

DolphinBisectTool/RunBuild.cs

@@ -9,10 +9,10 @@ public void Run(string title = "")
         {
             using (var runner = new Process())
             {
-                string startingDirectory = Directory.GetCurrentDirectory() +
-                                           @"\dolphin\Dolphin-x64\";
-                runner.StartInfo.WorkingDirectory = startingDirectory;
-                runner.StartInfo.FileName = startingDirectory + "Dolphin.exe";
+                string starting_directory = Directory.GetCurrentDirectory() +
+                                            @"\dolphin\Dolphin-x64\";
+                runner.StartInfo.WorkingDirectory = starting_directory;
+                runner.StartInfo.FileName = starting_directory + "Dolphin.exe";
                 if (!string.IsNullOrEmpty(title))
                     runner.StartInfo.Arguments = string.Format("/b /e \"{0}\"", title);
                 runner.Start();