** updates ### 11 Oct, 2018 - fix cran comments: to link the preprint from the CRAN webpage, add angle brackets around arxiv reference - update Github repository link - add BugReports link - add Travis-CI icon - update version number to 1.2

10 Oct, 2018

Resubmission

Fix cran comments

30 Sep, 2018

fix the bug when input K = 1