The LaTeX editor TexShop for Mac is included in TexLive. You can download it here: http://pages.uoregon.edu/koch/texshop/.
Configuring TeXshop
Select Preferences in the TeXshop menu:
UTF8
Select the Source tab and choose "Unicode (UTF-8)" in the Encoding menu.
Biber
Select the Engine tab and type "biber" in BibTeX engine field: