Added .travis.yml
Updated .travis.yml
Added mockery init
Implemented CriterionFactoryWorkerRegistryTest
Removed FieldCriterionBuilder
Ref: interfaces for SortClauseFactory and CriterionFactory
Added unit test stub for SortClauseBuilder
Test SortClauseBuilder::addSortClause()
Tested SortClauseBuilder sort methods
Fixed namespaces (renames, probably)
Tested SortClauseFactory (+added getters)
Interface cleanup on SortClause and Criterion Factory
Fixed @covers tags
Refactored Factory tests
Tested CriterionFactory (partial)
Tested CriterionFactory
Tested SortClauseBuilder
Tested BooleanCriterionFactoryWorker

Also refactored FactoryWorker tests.
Tests fixes
Refactored CriterionFactoryWorker tests

Tests can now use setUpMethodTest() to prepare a test
for a method.