Fix #2 - Add feed analysis in ResultsAnalyzer

[Suryakandukoori]

Summary:

Added feed analysis code to ResultAnalyzer. Create new excel file from a template. Added new code to ignore errors/warnings.

Expected behavior:

Creates new excel with output data. Ignores errors/warnings when supplied as a comma-separated string.

Please make sure these boxes are checked before submitting your pull request - thanks!

• [X] Run the unit tests with mvn test to make sure you didn't break anything
• [X] Format the title like "Fix #issue - short description of fix and changes"
• [X] Linked all relevant issues
• [X] Include screenshot(s) showing how this pull request works and fixes the issue(s)

[barbeau]

Thanks @Suryakandukoori!

[barbeau]

@Suryakandukoori I'm going to tweak a few things in the master branch, including some refactoring, so please check that at the end of today prior to working on the next items we discussed. Thanks!