test commit
updated, can be now used for 2D and 3D

with if/else case string variable dimension: ''2D" or "3D"
updated to 3D case

only a || strcmp('spherical',array) has been applied by the 'circle'
case
spherical sec source pos added

using conf.array = 'spherical' calculates spherical sec source positions
and its directions
File to test sec source position for 3D case
updated with resolution of evelation angle 3Dcase
update that resolution_theta ca be used
Created an example folder and moved the test files there
Merge branch 'master' into vincent

* master:
  Removed the scripts folder from the start and stop functions
  deleted test commit
  test commit
Merge branch 'master' into vincent

* master:
  Added a warning to auralize_ir if the impulse response has more than two channels
Added a example for the calculation of a frequency response
Merge branch 'master' into vincent

* master:
  Added octave-core files to .gitignore
changed back to SFS_config
Fixed the look direction of the listener in the frequency response example
Merge branch 'vincent' of github.com:sfstoolbox/sfs into vincent

* 'vincent' of github.com:sfstoolbox/sfs:
  changed back to SFS_config
restored SFS_config_example.m
corrected elevation angle
creats hopefully dummy irs for spherical grid ;)
faster computation speed of 3d dummy irs
oops :-D