cvglasso.R: Removed @examples for now, as they were all empty and prevented compiling of package.

dotplot.R: Finished implementing dotplot function. Still need to add roxygen documentation and write simple test/example.

simMix.R: Added function for generating inverse covariance matrices. Added sim.mix.networks function which generated random Mu, Sig and then calls simMix to generate data from the mixture model. Still need to add roxygen documentation and write unit tests.