Added env.sh with some helper functions to source
Added env.sh with some helper functions to source

Usage: source env.sh

If you source env.sh you get some helper shell
functions.

  pym   - runs python manage.py inside yunity-core
  ymake - runs make inside base dir
  ypm2  - runs pm2 inside base dir

They will work irrespective of the directory you
source from or cd into. They pass through any
arguments you give them.

Usage examples:

  pym test
  pym migrate
  pym remakeallmigrations
  ymake recreate-db
  ymake update
  ypm2 start pm2.json
  ypm2 stop django

yunity/yunity-setup,yunity/yunity-setup