some tests for the binomial

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@1048 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
added india example

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bayesr@1049 edb9625f-4e0d-4859-8d74-9fd3b1da38cb