Merge pull request #78 from USEPA/74-v113-release

Resolve CRAN issues then resubmit

Merge pull request #66 from USEPA/65-add-citation-for-new-ctxr-paper

65 add citation for new ctxr paper

Merge pull request #66 from USEPA/65-add-citation-for-new-ctxr-paper

65 add citation for new ctxr paper

ctxR version 1.1.0.

Initial CRAN submission release.