Merge pull request #5 from blackpixel/master

* Added support for /checkout/
* The ability to retrieve SSL certificates for the pages in the webview
* Allows the delegate to dictate whether the height of the content div should get fixed
* Nicer handling of javascript alerts
Fixed build for new code that assumed Security Framework was available.
Small adjustments.
Marked shouldStoreControllerFixContentDivHeight as @optional.
Made C99 compatible.
Call -[super layout]

Auto Layout requires that any implementation of -layout must call supers implementation.
Merge pull request #6 from js/patch-1

Call -[super layout]
Added Security.framework to README.mdown
[NSMapTable mapTableWithStrongToStrongObjects] is deprecated in 10.8
Corrected return declaration of FsprgOrderItem#subscriptionCustomerURL.
Made it linkable on older systems.
We don't retrieve SSL certificates below OSX 10.6.
Conditional compilation macros were backwards. This was checking the SDK version and respecting the deployment target. This meant that strongToStrongObjectsMapTable was getting called on 10.7 and crashing.
Silence sign comparison warning.
Merge pull request #8 from ksuther/master

Fixed crash on 10.7 and warning
FsprgEmbeddedStoreMac is now available as CocoaPod.
Fixed "immutable error" if trying to change order process.
Added 'checkout' to the order process popup field.
Respond to authentication challenge, fixes timeout on OS X 10.10. Thanks to @eelco.
Resolved a few warnings.