Added readme with a very basic information

README.md

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+# pyms
+The original source is a python package called pyms that was developed and published in 2012.
+See here: https://bmcbioinformatics.biomedcentral.com/articles/10.1186/1471-2105-13-115
+
+The code was stored on google code, you can see the archive here: http://code.google.com/p/pyms/
+
+The upstream repository here on github from ma-bio21 seems more up to date than the code found in the archive, 
+most notably the implementation of using mpi4py in loading ANDI files. There are other differences though, 
+some bug fixes and added functionality. 
+
+A diff of the two directories list the following files as different:
+./Deconvolution/BillerBiemann/Function.py 
+./Display/Class.py 
+./Display/Class.pyc 
+./Experiment/IO.py 
+./Gapfill/Class.py 
+./Gapfill/Function.py 
+./Gapfill/__init__.py 
+./GCMS/Class.py 
+./GCMS/IO/ANDI/Function.py 
+./GCMS/IO/MZML/Function.py 
+./GCMS/IO/MZML/__init__.py 
+./Peak/Class.py 
+./Peak/List/DPA/Class_old.py 
+./Peak/List/DPA/Class.py 
+./Peak/List/DPA/Function_new.py 
+./Peak/List/DPA/Function.py 
+./Utils/DP.py