Merge pull request #1 from ramusus/master

fixed tests, README
add CRUD methods for Post model
add tests
fixes for tests
update for README.md
code review
READMY update
fixes for Comment()
add fixes for Comment()
review Comment.fetch()
return removed strings for save method
code cleanup
code cleanup
docs cleanup
code cleanup
Merge pull request #2 from ramusus/master

test pull request
merge from ramusus master
fixes for tests
small fixes for vkontakte_api 0.4.8 ver