Merge pull request #7 from DimkaMosquito/master

Was added callback function for events
Merge pull request #8 from DimkaMosquito/master

support hint was added to Translator and Parser
Merge pull request #9 from DimkaMosquito/master

Support hints was updated
Merge pull request #10 from DimkaMosquito/master

was fixed bug in _getHelpText()
A typo was fixed:)
Another typo was fixed
Throwing an expection was removed from the _ectractObjects() method because it stopts a parsing when an user enters an invalid syntax blocks
was added _setSettings Method
Merge https://github.com/NightingaleStudio/exam.js
_setCallback method was added, hendlers was moved to settings