Passed the first failing test.
Added a second failing test.
Added stylecop and passed the second test.
Passed the test for two numbers with a comma.
Added a test to allow for any number of arguments.
Passed test for any number of arguments, and refactored a little.
Added and passed a test to allow for line breaks as delimiters.
Removed the braces from the one line for loop.
Created a test to allow new delimiters to be added.
Passed the test to allow for a new delimiter to be specified.
Added a test to throw an exception for Negatives. Also, passed the test.
Created a test to make sure the correct error message is shown.
Passed the test to show a single number in the error message.
Added and passed test for multiple negatives. Extracted some methods.
Added and passed test to ignore numbers bigger than 1000.
Added and passed a test to allow for delimiters of any length. Also added a test to al,ow for multiple delimiters.
Passed test to allow for multiple delimiters.
Added and passed test to allow for multiple delimiters of any length.
Refactored a little.