Use "npm init" to initialize package.json instead of just writing an …

…empty object into it.

tasks/e2e-simple.sh

@@ -152,7 +152,12 @@ mv package.json.orig package.json
 
 # Install the CLI in a temporary location
 cd $temp_cli_path
-echo "{}" > package.json
+
+# Initialize package.json before installing the CLI becuase npm will not install
+# the CLI properly in the temporary location if it is missing.
+npm init --yes
+
+# Now we can install the CLI from the local package.
 npm install $cli_path
 
 # Install the app in a temporary location