add Python coin flip

1 for heads -1 for tails
add option to return heads vs tails
flips can be written to csv with writeflipaverage()
add R project
flip coin x times in a row x times each

added ability to output coin flips in a matrix [flips, count]
changed output file name reversed flips and count
added header to output
add row labels to csv
change count to coin

e.g. flip 100 coins 100 times
result of flipping 1000 coins 100 times each
clean up csv within writeflipaverage()
clean up file name
new 1000 coins flipped 100 times each