Moved tablespec validation from MongoTripodConfig constructor to a public method
Fixed validate method, doc blocks
Fixed issue in getTableSpecFields, it wsa keep adding same fields again and again
A simple phpunit performance test for MongoTripodConfig object creation
Updating performacen test to validate against a benchmark number
fixed typo, set to echo testname in setup()
Merge pull request #3 from talis/20140506-Fix-performance-impacted-by-tablespec-validations

fixing performance issue in tripod created by tablespec validation, some code optimization did the trick. Added a simple performance as well.