remove Underscores section
Translation to Portuguese-Brazil

Document translated into Portuguese in order to facilitate the
interpretation and use by brazilian developers.
Language corrections
Removing 'sempre'
Merge pull request #51 from NZN/pt-BR

Translation to Portuguese-Brazil
combine discussion of variables and properties
Merge pull request #48 from modestinc/ivar_access

Underscores section contradicts Variables section
Small changes in spacing and Ternary Operator
Change New York Times for Hyper.

I <3 this coding style.
Change NYT for HYP.
Remove formatting to attribution.
Nil errors for correct validation.

http://stackoverflow.com/questions/9444846/nserror-error-vs-nserror-error-nil
Change Image Naming Camel Case to Lower Camel Case to follow Objective-C Style.

http://c2.com/cgi/wiki?LowerCamelCase
Improve error handling.

For error handling create an extra variable that explains the returned boolean for validation to improve code readability.
Explain change in spacing.
Change NYT for HYP.
Add method implementation guidelines.
Represent recent changes in method implementations.
Improve wording.
Update LICENSE