Updated SegmentViewController to be more compliant with Obj-C source code - fixed segment_action method.

Rearranged code sequence in RM file to follow the Obj-C source code.

Also changed the segment_action to include sender parameter per Obj-C
source and corrected segment control action: argument to be
‘segment_action:’

Added localized call to self.title string.

Applied Ruby Style Guide to quote characters.