a new article 'Flipping Coins Simulation with R'
change title 'Simulation of Coin Flipping with R'
fix grammar problems
rename chunk label.
rename file 2013-03-27-simulation-of-coin-lipping-with-r.Rmd
typo 'flipping'.
Merge pull request #4 from yulijia/gh-pages

a new article 'Flipping Coins Simulation with R'