Fix codeblock rendering with HAML when there is a filetype defined.
Remove .ruby-version file and add note to README regarding minimum Ruby version.

@imathis - look ok?

Closes #1365.
".git" added to sample string with SSH repository URL

Octopress does not work with a repo URL like a "git@github.com:your_username/your_username.github.io" ("ERROR: repository not found" error appears).
It is necessary to add ".git" to the end of this line.
fix old style gist url not found issue
Add proper disqus identifier comment count links

Fixes #277
Fix Disqus over https.

  Forcing http:// as protocol will make Disqus fail when server over
  https for security reasons.
Clean up Gist redirection.
Error handling FTW
Use a protocol-relative url to load disqus over https or http
removed superfluous parentheses
Removed space to fix HAML compatibility on include_code.
Update Octopress version