Created Logic class
Merge remote-tracking branch 'origin/master' into search_logic
Merge remote-tracking branch 'origin/master' into search_logic
Added Search Base On Description

Added Search function base on description, accompanied with test cases
Added Search Base on Date Period

Added Search with Date Period + Testing Unit
Added Search Base On Description

Added Search function base on description, accompanied with test cases
Fix Conflict in Logic Checkout
Resolve Conflict in LogicTest
resolve conflict in Logic Class
Merge branch 'master' into journal