Updated local server instruction, use virtualenv

 Changes to be committed:
	new file:   .env.source
	modified:   .gitignore
	modified:   README.md

	deleted:    .env
Fix rtq and debug error

 On branch master
	deleted:    .env
	modified:   app.py
Updated README.md
Merge branch 'master' of github.com:leesei/heroku-hkstock.py

Conflicts:
	README.md