Updated makefile: - Added new commands for virtual environments, mostly for reference. - Updated some commands to use to make commands easier to read, and also to properly cover multiple environment use cases.
Updated makefile:
- Added new commands for virtual environments, mostly for reference.
- Updated some commands to use to make commands easier to read, and also to properly cover multiple environment use cases.

Updated readme:
- Virtualenv related updates.

joeflack4/pma-api,joeflack4/pma-api,joeflack4/pma-api,joeflack4/pma-api