first commit
Initial commit
I separated sel_band into two functions: sel_band and norm_spec. I also added the plot_spec function.
I eliminated import of pylab, since it is not needed anymore. I also edited the intro text to specify what modules are needed to run astrotools.
Added create_ascii function. In smooth_spec, included two different possibilities for resolution header names, and also resolved an issue with specData dimensions to allow user greater flexibility in input format.
Added uncertainty calculation to avg_flux()
Cleaned docstring a bit.
Simplified error messages in read_spec.
Added clean_outliers function. Complemented mean_comb function.
Edited  mean and variance calculations in mean_comb.
Fixed bug in norm_spec method where limits where being changed.
Fixed bug in smooth_spec to recognize when specData is only one spectrum.
Improved smooth_spec; added SDSS fits types to read_spec; eliminated non-public  function *__normalize* as it was redundant.
Started modifying read_spec to be able to read txt files.
Completed modification of read_spec to be able to read txt files.
Edited docstring of read_spec.
Edited linearity check when file is ascii in read_spec.
Edited linearity check when file is ascii in read_spec.
Fixed bug with normalization limits when more then one spectrum provided simultaneously in norm_spec.
Eliminated objId parameter in norm_spec and added flag parameter instead, to warn when limit range is modified.