Update fixing-broken-ssl-certificates.md

Minor wording updates.
Merge pull request #244 from franckverrot/patch-1

Update fixing-broken-ssl-certificates.md
rvm 1.25.34 release blog post
fix the new blog posts, add links back to rvm issue tracker for RVM#number
remove broken link, preserve url
remove empty ruby file
get rid of the commic logo, use the new logo from @johnivanoff, update
add img.shepard css rule for the new logo