Merge pull request #52 from zborboa-google/master

Add Github Gist example
Add additional content-type tests
Merge branch 'master' of github.com-php-curl-class:php-curl-class/php-curl-class

* 'master' of github.com-php-curl-class:php-curl-class/php-curl-class:
  Add Github Gist example
Reorder and add xml content-type tests
Make password optional when using basic authentication
Clean up
Add Gittip example
Add Flickr upload photo example
Add MailChimp subscribe email address example
Decode atom+xml responses seamlessly
Add YouTube view count example
Fix syntax error for PHP 5.3
Add Google+ profile example
Fix response format
Merge pull request #54 from zborboa-google/patch-2

Fix response format
Add Domainr search domain name availability example
Merge branch 'master' of github.com-php-curl-class:php-curl-class/php-curl-class

* 'master' of github.com-php-curl-class:php-curl-class/php-curl-class:
  Fix response format
Add CURLFile example to README
Merge pull request #56 from zborboa-google/patch-3

Add CURLFile example to README
Add Instagram example