small error in documentation, "after" parameter

[paul-rottger]

The example you give for "First 10 submissions to /r/politics in 2017, filtering results to url/author/title/subreddit fields." actually returns the 10 most recent submissions. The after parameter appears to not specify the starting point but rather the furthest back that the search will go. If you replaced after with before, that would return the 10 most recent submissions leading up to the specified datetime.

Thanks for putting this together :)

[CDeLeon94]

If you don't set a sort when calling search_submissions() it defaults to 'desc' which appears to be causing the unintended behavior.

psaw/psaw/PushshiftAPI.py

Lines 162 to 164 in 53df79d

	if 'sort' not in payload:
	# Getting weird results if this is not made explicit. Unclear why.
	payload['sort'] = 'desc'

It seems to me that, if you're going to use before you'll want to pair it with sort=desc, and after pairs with sort=asc