updated the readme file

[shillasaebi]

made some minor documentation changes updated initially spelling updated traffic spelling removed "I" from to in the reports pod text

Please make sure that you follow instructions from CONTRIBUTING

Specially:

• Check if all tests pass, see TESTING for deatils.
• Make sure you've added test coverage for new features/metrics.
• Make sure you have updated documentation.
• If you added a new metric, please make sure you have been following instructions about adding new metric.