Description:

Otree installation: https://otree.readthedocs.io/en/latest/install.html#
Run otree app: 
	1. In terminal, cd otree project file where you save the app projects
	2. Input "otree devserver"
	3. Open "http://localhost:8000/" in your browser

Otree project files: including four separate apps
	1. sharing_anon_control: anonymous*control group
	2. sharing_anon_treatment: anonymous*persuasion treatment group
	3. sharing_nanon_control: not anonymous*control group
	4. sharing_nanon_treatment: not anonymous*persuasion treatment group

Take "sharing_anon_control" for example:
	Text questions are edited in "models.py".
	Page descriptions (introduction, requirements, etc.) are respectively edited in HTML pages.
		"sharing_anon_control" - "templates" - "sharing_anon_control" 
	Page presenting sequence is edited in "pages.py"