Merge pull request #1 from TShimko126/master

Updated snipSNPer Program
Changed cadmium to cadmium chloride
Updates to the python and R scripts
Finished version of snipSNPer.py with a README.txt file containing instructions
Major updates to README.md and snipSNPer.py
Formatting updates to README.md
Pre-summer changes to dilution code: see Google Doc for details