Merge pull request #161 from Ashrey/dev

Arreglado y optimizado la autocarga
Merge pull request #162 from Ashrey/dev

Optimize the validator
Merge pull request #163 from Ashrey/dev

simplify exec method
Merge pull request #164 from Ashrey/dev

Refactory REST
Merge pull request #165 from Ashrey/dev

Dev
Merge pull request #166 from Ashrey/dev

Separate class
Merge pull request #167 from Ashrey/dev

Compatible with PHP 5.2
Fix on file and texarea autoload

remove $value from file
add $value from textarea
Merge pull request #168 from henrystivens/patch-1

Fix on file and texarea autoload
add documentation
Add method exist in model rules
Get to call the field name
add lenght validator
Change static for self (5.2 compatibility)