reorganize reports

diff --git a/reports/report_2017-01-13.rnw b/reports/OLD/report_2017-01-13.rnw
similarity index 100%
rename from reports/report_2017-01-13.rnw
rename to reports/OLD/report_2017-01-13.rnw

diff --git a/reports/report_2017-02-02.Rnw b/reports/OLD/report_2017-02-02.Rnw
similarity index 100%
rename from reports/report_2017-02-02.Rnw
rename to reports/OLD/report_2017-02-02.Rnw

diff --git a/reports/report_2017-02-02.ipynb b/reports/OLD/report_2017-02-02.ipynb
similarity index 100%
rename from reports/report_2017-02-02.ipynb
rename to reports/OLD/report_2017-02-02.ipynb