Updated index display, found comment bug, created README.txt and
.gitignore.

Updated the display of arrays to include the symbol corresponding the to
the index in the alphabet array.

Also discovered a bug that causes an IndexOutOfBoundsException: -1
because of multi-line comments that do not have an asterisk before each
line. First of all, they should be caught by the comment catching
section of the code and should not be attempted to be added to the
language. Second, people should not code like that... but they will, so
the issue must be fixed. The attempted fix is currently commented out.

Created the README.txt. I had actually created this before, but forgot
to include it in the previous commit. It was updated and here it is. It
contains details on the algorithm and how it works (with examples!).

Also added the .gitignore for ignoring the bin folder.