Data Science Methodology document added

students\rxerol · students\rxerol · commit 5021b4f288a9 · 2016-01-18T21:57:22.000-06:00
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+## Data Science Methodology
+
+This file is created inspiring by John Rollins's Data Science 
+Methodology [blog 
+post](http://www.ibmbigdatahub.com/blog/why-we-need-methodology-data-science)
