giCounter: Keep track of page visitors using text files

This class can be used to keep track of the number of page visitors using text files.

It uses text files to store page visit counts.

Each time a user visits a page the class adds or updates an array entry that counts the number of visits to that page. The array is serialized and store in a text file.

The class reads the text file and unserializes the array to get the count of visited site pages.