notes.txt : Updated OSX install notes.

doc/notes.txt

@@ -218,6 +218,7 @@ OSX - Install Notes
 7. sudo port --set gcc mp-gcc47
 8. sudo port install fltk
 9. sudo port install xorg-libX11 
+10.sudo port install git-core 
 10 install ~/Library/Preferences/org.larke.kc.txt (is this required?)
 11 create ~/Library/Preferences/kc
 12 Install ~/Library/Preferences/time_line.js, time_line_preset.js, time_line_preset.csv