Make sure all dependencies are installed before starting karma
Make sure all dependencies are installed before starting karma

In case node_modules dir is deleted, `tns test <platform>` command will fail.
So ensure all dependencies are installed before starting karma server.

NativeScript/nativescript-cli,tsvetie/nativescript-cli,tsvetie/nativescript-cli,NathanaelA/nativescript-cli,tsvetie/nativescript-cli,NathanaelA/nativescript-cli,NativeScript/nativescript-cli,NativeScript/nativescript-cli,tsvetie/nativescript-cli,NathanaelA/nativescript-cli,NativeScript/nativescript-cli,NathanaelA/nativescript-cli,tsvetie/nativescript-cli