Merge pull request #17 from pborreli/typos

Fixed typos
Facelift yall
Face lift merge
Cleaning up homepage
HTTP, homepage, and installation improvements
Fixing tweet link
Fix Json Schema exemple for service description
Merge pull request #18 from romainneutron/patch-1

Fix Json Schema exemple for service description
Adding information about contributing and security
Adding to TOC
Adding extends attribute to operations
Fixed the incorrect namespaces in the examples.
Merge pull request #19 from RobinvdVleuten/master

Fixed the incorrect namespaces of the adapters in the examples
Fixed typo in service models location docs.
Merge pull request #20 from hradtke/patch-1

Fixed typo in service models location docs.
Added missing summary attribute to operations.
Merge pull request #21 from hradtke/patch-2

Added missing summary attribute to operations.
Fix example web service client

The example web service client is out of date. The 
Guzzle\Service\Client::setDescription() method now requires an instance of
Guzzle\Service\Description\ServiceDescription.
Merge pull request #22 from hradtke/patch-1

Fix example web service client
Added notice about default TTL without caching policies