* Updated code of conduct
Link to homepage and version are updated from http to https as [Hyper Text Transfer Protocol Secure].
's' is suffixed to http to make the secure link so that it is not considered as a mallacious spam link by any browser.
* Update CODE_OF_CONDUCT.md
All links are updated up to date now.
I think it's a shame that the second most popular github repository does not have a code of conduct and I intend to fix this. We never needed a code of conduct, we don't want to need a code of conduct and that's why we need a code of conduct.
I submit this as a PR instead of commiting directly to master because I want to allow some debate on this issue. I will merge this PR in a week or so, if there is no good case against it.