This project has been discontinued. A primitive string based filesystem is seen in https://github.com/ddworken/hardwarePasswordManager while a more mature EEPROM library is seen at http://playground.arduino.cc/Code/EepromUtil .
The two important methods are:
void addString(String stringToAdd, int stringPlace)
Pass this method a string (of length less than 924 characters) for it to be stored in stringPlace. stringPlace must be an even number between 0 and 98 (otherwise will not work). This even number is the string identifier.
String getString(int stringNumber)
When passed an even number between 0 and 98 it will return the string with that identifier.
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Currently supports up to 50 strings of length up to 924 characters.