Add another example with multiple identifiers to the sample FDA XML file
Add Nyucore record examples to the FDA ResourceSet spec
If the identifier doesn't have "http://" for a FacultyDigitalArchive resource, set it as the citation before creating the Nyucore model
Add examples to the Resource specification for "pids" in cases where there are "handles" and URLs in the resource identifier.

When we select the "pid identifier", we prefer, in order
1. Handles - identifiers that start with the pattern "http://hdl.handle.net"
2. URLs - identifiers that start with the pattern "http://"
3. First identifier - if the identifier doesn't have a "handle" or a URL, use the first one we have
Implement the functionality for the "pid identifier" where we prefer "handles", then URLs and finally the first identifier we encounter
Allow SourceReaders to set the "pid_identifier" for Resources in cases where the source has a specific identifier that should be used for the "pid"
Remove the pry binding from the FacultyDigitalArchive spec
Add the VCR cassette that creates Nyucore models in the FacultyDigitalArchive specification
Add and update Resource specification examples for URLs

Add examples to the Resource specification for URLs that are served over SSL and update the "http" cleaning example to expect to clean "http://" from the pid in cases where the the identifier is a real-ish (i.e. starts with "http://") URL
Clean pids that match the URL regular expression

In order to filter out both "https://" and "http://", use the URL regular expression in the pid cleaner method for substitution
Set the desired prefix with "let" and use the memoized helper method in the example
In the FacultyDigitalArchive ResourceSet, set the "http" identifier before we create the Nyucore model
Add examples to the FacultyDigitalArchive spec when the record has multiple examples
Refactor the :add_identifier_as_available_or_citation method that is used before we create an Nyucore model for cleanliness and readability
Update the FDA example in the DataLoader spec based on the latest FacultyDigitalArchive code
Update the FacultyDigitalArchive and DataLoader VCR cassettes based on the latest code
Merge pull request #52 from NYULibraries/feature/add-fda-examples

Feature/add fda examples

@scotdalton 
Merging as is. No need to add ```https://``` option to ```HANDLE_REGEXP```.

Although handles over ```https://``` resolve correctly, the CNRI documentation specifies ```http://``` in the documents I reviewed (see References).

References: 
http://www.handle.net/proxy.html
http://tools.ietf.org/html/draft-sun-handle-system-00