Updated Standards Readme File

This commit is an amendment to last commit.

##Purpose:
The heading _Why you shouldn't..._ wasn't on a new line

##Changes
- Changed _Why shouldn't you..._ heading from interrogative to positive.
- Added a line gap before _Why you shouldn't..._ heading for proper parsing of md.
Add a standard

- Test Driven Development must be followed/applied
Merge branch 'master' of https://github.com/RazaChohan/ReadytoServe-POS into development