adding gitignore and lineaer_analysis
Merge branch 'arun_analysis' into lev_analysis
made changes to peak to make it more abstract
 finished gauss creator complex
for merging
merging
Merge branch 'arun_analysis' of https://github.com/arunjandaur/xas into lev_analysis
improved est_amps with least squares
Merge branch 'arun_analysis' of https://github.com/arunjandaur/xas into lev_analysis
fixed est_amps in peak_shift
commiting for merging
scale space fix
Merge branch 'lev_analysis' of https://github.com/arunjandaur/xas into arun_analysis

Merging Lev's code into mine in order to have a working sum of gaussians prototype.