Fix english typo on Phalcon_Flash_Direct

English typo
add extra doc for model::skipAttributes()
Merge pull request #398 from FlorentMetz/master

Fix english typo on Phalcon_Flash_Direct
Merge pull request #401 from guweigang/master

Add extra doc for model::skipAttributes()
Merge pull request #403 from fizzka/typos-and-formatting

Typos and formatting
translation corrected
corrected translation
fix translation