Add server architecture

Change former architecture by a new client-server
approach. Specially suitable for serving an important
number of responses in a short period of time.
Remove SMTP_SERVER settings.
Rename run_app.py -> run_server.py
Adapt automation process to the new architecture
Add WSGI support for production environments
Add LICENSE.txt
Change README.md due to the new architecture
Better naming for some vars
Change README.md due to some changes in the vars names
Merge branch 'master' of https://github.com/javidgon/endpoint into ep-add-server-functionalities

Conflicts:
	README.md
	fabfile.py
	settings.py
Add missing SERVER var in fabfile.py
Merge pull request #20 from javidgon/ep-add-server-functionalities

Ep add server functionalities