Adding posts->update method
Merge pull request #20 from anhnt/anhnt_add_lack_method

Adding posts->update method
Update README.rst

Added semi-colons so the example doesn't have a sad.
Merge pull request #21 from typhonius/patch-1

Update README.rst
Added CA cert bundle fallback for curl.  Fixes #22.
Merge branch 'master' of github.com:disqus/disqus-php