Update SObjectDataLoader.cls
Create SObjectDataLoaderTest

Test class for SObjectDataLoader
Delete SObjectDataLoaderTest
Create SObjectDataLoaderTest.cls

Test class for SObjectDataLoader.
Create SObjectDataLoaderTest.cls-meta.xml

metadata xml for SObjectDataLoaderTest.cls
Update SObjectDataLoader.cls-meta.xml

Updated API version to 29.0
Merge pull request #3 from Sonal4J/master

SObjectDataLoader Updated.

This Change added 'LastViewedDate', 'LastReferencedDate' to the whitelist. It also allows to add user to serialize List containing Id's of different objects . While deserializing Self reference fields relationship is maintained (e.g. Account parent child relationships). Test methods are added to test class.