Use the --justlaunch option when running tests via Travis
Use the --justlaunch option when running tests via Travis

Fixes #57

NativeScript/sample-Groceries,dzfweb/sample-groceries,poly-mer/community,qtagtech/nativescript_tutorial,danik121/HAN-MAD-DT-NATIVESCRIPT,tjvantoll/sample-Groceries,tjvantoll/sample-Groceries,NativeScript/sample-Groceries,anhoev/cms-mobile,qtagtech/nativescript_tutorial,anhoev/cms-mobile,anhoev/cms-mobile,dzfweb/sample-groceries,NativeScript/sample-Groceries,Icenium/nativescript-sample-groceries,qtagtech/nativescript_tutorial,dzfweb/sample-groceries,tjvantoll/sample-Groceries,poly-mer/community,poly-mer/community