fix broken appearance selector. don't reference self in initializer
move nib specific code to nib specific method
Merge pull request #18 from dim1014/patch-3

fix broken appearance selector. don't reference self in initializer
Merge branch 'patch-4' of https://github.com/dim1014/JVFloatLabeledTextField into dim1014-patch-4

Conflicts:
	JVFloatLabeledTextField/JVFloatLabeledTextField/JVFloatLabeledTextField.m