makeElementsVisible property
fix analyzer warnings:
Method accepting NSError** should have a non-void return value to indicate whether or not an error occurred
Potential null dereference.  According to coding standards in 'Creating and Returning NSError Objects' the parameter may be null
Fixing typo in README
Merge pull request #392 from kleinlieu/master

Fixing typo in README
Merge pull request #388 from phatmann/make-elements-visible-property

makeElementsVisible property
Merge pull request #391 from paulz/fix-warnings

fix analyzer warnings
Fixing typo in KIFUITestActor
Merge pull request #393 from kleinlieu/fix-typo-in-KifUITestActor

Fixing typo in KIFUITestActor