Fixed typo in Student spec.
Added test for takeExam method in Student spec.
Removed direct prototype call in Student from parent object Man.
Changed test spec for check inherited properties.
Added test spec for check own properties.
Added test spec for check default properties.
Extended spec for checking default values in Student spec.
Fixed Students options property.
Added test for exams method in Student.
Added :older_man: Professor class. Added tests for Professor. Enhanced test for Student :walking:
Added more tests for Professor :older_man:
Added tests for Man class.
Replaced increment age with grow method in Professor makeScientificWork method.:octopus:
Merge pull request #1 from mir4a/development

PR from dev to master :high_brightness: