Changed the README to markdown

README.textile → README.md

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-h2. What is snp.plotter? 
+# What is snp.plotter? 
 
 snp.plotter is an R package that creates publishable-quality plots of p-values using single SNP and/or haplotype data. Main features of the package include options to display a linkage disequilibrium (LD) plot and the ability to plot multiple sets of results simultaneously. Plots can be created using global and/or individual haplotype p-values along with single SNP p-values. Images are created as either "Portable Document Format (PDF)":http://en.wikipedia.org/wiki/Pdf or "Encapsulated (EPS) files":http://en.wikipedia.org/wiki/Encapsulated_PostScript.
 
-h2. Who are the intended users of snp.plotter?
+# Who are the intended users of snp.plotter?
 
 Researchers conducting gene association studies who need to create images showing results in the form of p-values of their work along with a "linkage disequilibrium":http://en.wikipedia.org/wiki/Linkage_disequilibrium plot to show the underlying structure of the study population. Because snp.plotter is a visualization tool, the type of study design used either family-based, case-control, or a combination is irrelevant.
 
-h2. What are the main features of snp.plotter?
+# What are the main features of snp.plotter?
 
 * Publishable-quality graphics in resolution-independent formats
 * Free and open source