Revert "Merge pull request #34 from agitka/Vkontakte-iOS-SDK-v3.0"

This reverts commit bf859e2e6d8ac24b955af0c8fa653ed3f4de84ce, reversing
changes made to ceb2288a2e14c83323d6fd0e3b0be9b1657fa881.

Conflicts:
	Project/Vkontakte-iOS-SDK-v2.0/VKRequestManager/VKRequestManager.h
	Project/Vkontakte-iOS-SDK-v2.0/VKRequestManager/VKRequestManager.m