2U Guides 2Q Revenue Of $124.3M-$125M Vs. $128.84M Estimate; Guides Q2 Adj. EPS Of $(0.36)-$(0.35) Vs. $(0.34) Estimate; Guides FY19 Revenues Of $534M-$537M Vs. $547.71M Estimate; Guides FY19 Adj. EPS Of $(0.34)-$(0.31) Vs. $(0.34) Estimate