The 5-star rating system of the repo is not a very good one imo, see e.g.
http://davidcelis.com/blog/2012/02/01/why-i-hate-five-star-ratings/
Perhaps it's better to change it to a binary system like YouTube, or something ternary like this:
-1 : don't like, recommend not to try this
+1: like, recommend
+2: like very much, strongly recommend
where instead of taking the average of all ratings, the counts of each category are shown, e.g. with a red bar the size of the -1 votes, a dark green bar the size of the +1 votes and a light green bar the size of the +2 votes (or just let the +2 votes counts as two +1 votes). The total size of the bars could reflect the total number of votes (but maybe not linearly).
http://davidcelis.com/blog/2012/02/01/why-i-hate-five-star-ratings/
Perhaps it's better to change it to a binary system like YouTube, or something ternary like this:
-1 : don't like, recommend not to try this
+1: like, recommend
+2: like very much, strongly recommend
where instead of taking the average of all ratings, the counts of each category are shown, e.g. with a red bar the size of the -1 votes, a dark green bar the size of the +1 votes and a light green bar the size of the +2 votes (or just let the +2 votes counts as two +1 votes). The total size of the bars could reflect the total number of votes (but maybe not linearly).