Add ignore rules to receive upcoming synplot/synspec files.

I will be adding shortly all file os Synspec spectral synthesis.
More info on next commit.
Add description of software.

There will be 3 more commits.
1) Synplot essential files
2) Atmospheric model (Available online)
3) Atomic data (Available online)
Add Synplot/Synspec essential files to run.

I have tried to remove everything non-essential.
Add atmospheric models availabel online.

I donwloaded the atmospheric models BG available online and
changed the version of synplot.pro that I have to run this set of
models.
Add atomic data.

All atomic data were downloaded direct from the website.
Add section to compile Synspec and Rotin3 if compiler is available

If the user knows that g77 and/or ifort is availabe, please make
sure that one of them are at the super-user PATH.
Change routins from idlwrapper to synthesis.synplotwrapper

Removed the routines synplot_input and run_load from the
idlwrapper module and tranfered to the synthesis module.

These routines were more related with spectral synthesis than
with IDL.
Change __init__ to reflect the change of the locations of routines
from the last commit.
Import the synthesis module
Change the import statement to reflect the change of location of
some routines as stated before.
Change to reflect the new module 'synthesis' and the installation
of the Synplot/Synspec data files.

The synplot/synspec data files are copied to a hidden folder inside
the user directroy. It is called '.s4'.

As the installation is done by using root priviliges, the root has
ownership of the .s4 folder, and because of that, synplot/synspec
cannot write files in this folder. The last lines of the setup.py
folder is to change ownership from root to user.