Previous was bad commit. Method now correctly returns true

Signed-off-by: Emily Platzer <emilyplatzer@gmail.com>
New test to check single word non palindrome

Signed-off-by: Emily Platzer <emilyplatzer@gmail.com>
refactored with private method and ensured that palindome returns true if string contains commas, dashes and spaces.

Signed-off-by: Emily Platzer <emilyplatzer@gmail.com>