Update plugins/README.md

link to "max-links" plugin does not work (minor typo)
Merge pull request #326 from Bananeweizen/patch-1

Update plugins/README.md
use correct base url for draw plugin
Merge branch 'gh-pages' of github.com:breunigs/ingress-intel-total-conversion into gh-pages
fetch portal image via https
show users how to enable HTTPS UserJS in Opera
remove URL to image files for draw tools; that path is set in main now
use GitHub pages path again, let’s see if their rate limit and caching behaviour is better
release 0.7.8 to avoid hammering GitHub’s servers
Merge remote-tracking branch 'upstream/gh-pages' into gh-pages

upstream merge