added validable interface
implemented validable interface on entities
adjusted ua/request to pss parametesr around a little better
cleaned up white space
used more appropriate exception in entity
toArray used from entity
code comments
Merge branch 'feature/validation' into develop
custom exceptions used
added phpunit.xml for testing
added note on next "upgrade"
some entity testing to start
more entity tests
entities tested
added current() method to get/set current entity
fixed current() method
added tests for UA object
added readme notes for more future stuffs
Merge branch 'feature/test' into develop
updated readme