Merge pull request #11 from dcaff/master

merge
Uploaded a new 2dranduphill function that was use for hw4, for doing random uphill search on a matrix. Still need example if anyone can think of one. Thanks.
Anneal function, haven't put anything in there description or comments, examples yet.
uphill.mixnorm function, basically is the same thing as the em one except with the uphill search method. param and example is not done yet cause i'm lazy, i'm just finding stuffs to put on atm
added description/param on anneal, fixed a few errors on 2dranduphill when check().
rda file for my economic data set, yes I think I figured out, maybe? someone test if it work please.
Merge pull request #8 from JackStat/master

merge