Code Formatting

Added regions to distinguish the code
Replaced List<string> buf     with    StringBuilder strBldr
Delete WndSearcher class

Delete unused WndSearcher class
CreditCardUtility class

Added CreditCardUtility class with credit card validation functions
beta version

- Recognizes the 'password' label on foreground window
- Holds only 8 char words for password and 16 char numeric word for
credit card (if they are valid credit card numbers)
- Every 5 logged word send the file to a server using http post method
- Removed unnecessary code