Renaming

volatile values in entities

Delete tests

Few logical errors fixed

Simple test cases from one thread

Empty test

gitignore update

Stupid mistake fixed

Full documentation

Method getNumberOfLastMinuteEvents is refactored. Fixed error with indexes of array elements.

synchronization on array removed

RecordEvent and getNumberOfLastDayEvents documented

Renaming. Ints switched to longs.

Renaming variables. Refactoring recordEvent method.

Renaming constants. Refactoring to current time method. Seconds stored in int instead of long.