Added script to tell if running in Octave or not

matlab/updated_scripts/is_octave.m

@@ -0,0 +1,8 @@
+% Used to check if the script is running in Octave or MATLAB
+%
+% Logic is from https://stackoverflow.com/questions/2246579/how-do-i-detect-if-im-running-matlab-or-octave
+%
+% @return val True if the current script is running inside Octave, false if MATLAB
+function [val] = is_octave()
+  val = exist('OCTAVE_VERSION', 'builtin') ~= 0;
+end