Fixing up typo in gulpfile

I'd missed a space, so gulp prep was trying to do "npm installdel" instead of "npm install del", which means that the command errors out. Don't know why it seemed to work before though.

src/gulpfile.js

@@ -19,10 +19,12 @@ gulp.task("install", function (callback) {
     var modules = ["del", "gulp", "typescript", "ncp", "q"];
     var asyncLoop = function(idx) {
 	if (idx < modules.length) {
-	    exec("npm install" + modules[idx], { cwd: ".."}, function(error, stdout, stderr) {
+	    exec("npm install " + modules[idx], { cwd: ".."}, function(error, stdout, stderr) {
 		if (!error) {
 		    asyncLoop(idx + 1);
 		} else {
+			console.warn(stdout);
+			console.warn(stderr);
 		    callback(error);
 		}
 	    })