Skips file reading code

[joshuali7536]

Using a txt file as the input doesn't work because the argString2 variable isn't updated with the path argument.

if (argString2.find(".txt") != std::string::npos)

This line of code will never be true because argString2 will be empty unless there are more than 3 arguments.
I used the following arguments for testing:

-i "Silver Blaze.txt"