Add documentation links

- Add access to each doc file
Make import always create new entities when no primaryAttribute is defined.
Fix code format.
Add tests for import without a primary key.
Add support for `booleanAsStringTestAttribute` (where the attribute type is `boolean` yet the data source is a string value).
Prior to this patch, this would cause a crash if encountered.
Also added a test for the new behavior.
All tests pass.
Merge pull request #680 from JRG-Developer/Add_Support_For_Boolean_As_String

Added support for boolean attribute provided as a string in data source
changing the name of the sample target to Recipes, which seems to irk a few people
updating the xib so that they work on iphone5 layouts with xcode 5.1
Fixed data import on wrong object class

Fixed issue where import value was being called on the wrong object.  Data is for the related object but was asking the local object class to import the info.  The expected result is that the related object ask its own class how to import a value.
Merge pull request #719 from rocket0423/develop

Fixed data import on wrong object class for related objects
Update to Expecta v0.3.0 and Specta v0.2.1
Latest managed object subclasses from mogenerator
Support Importing NSDate from Unix Timestamp

Closes #627
Merge pull request #641 from SergioEstevao/develop

Allow import of entities without a primary key (`relatedByAttribute`)
Fixed relationship data import key lookup

Fixed an issue where if you have more than one mappedKeyName it would not search through all of the mappedKeyNames to find the correct key for the lookup for a relationship object thus causing a duplicate item to be created in the database.  The current implementation takes the first key and assumes it is the correct key.  The expected workflow is to check the first key mappedKeyName then if there is no value for that key to move onto the next key mappedKeyName.1 until either a value is found or all mappedKeyNames have gone through.
Merge pull request #723 from rocket0423/develop

Fix relationship data import key lookup not seeing more than one `mappedKeyName`
Switch back to using mainline Expecta now that it works with Xcode 5.1
Add an AppKit-style version double instead of the unmaintainable earlier solution
Don’t retain the error handler target

Fixes #428.
Add aggregate operations that support grouping by a keypath