Add initial .gitignore file to root directory
Change license type to WTFPL 2
Rename Utilities#getDigits -> getDigitCount
Rename Utilities#getDigitAt -> getRightDigitAt
Add Utilities#getDigitAt (position from leftmost digit)
Add more test cases for the Utilities class
Change Utilities class to use Preconditions (Guava)
Change StopWatch to use Utilities#getDigitCount
Change StopWatch to use Utilities#getDigitCount
Change tests to use static imports for Assert
Add exclusion rule for "res/" to .gitignore
Add readme to project root directory.