Analyze group in vk and return list of most popular posts ordered by the number of likes
usage: vkga.py [-h] [-d vk_domain] [-c [0..100]]
optional arguments:
-h, --help show this help message and exit
-d vk_domain, --domain vk_domain
choose group or user to analyze
-c [0..100], --count [0..100]
number of posts from the wall to analyze, integer in
range 0..100