add launchApp function to run an app asynchronously and open it in a web browser

man/launchApp.Rd

@@ -0,0 +1,20 @@
+\name{launchApp}
+\alias{launchApp}
+\title{Run an application in a new process and open it in a web browser}
+\usage{
+  launchApp(appDir, port = 8101L)
+}
+\arguments{
+  \item{appDir}{Application directory}
+
+  \item{port}{The TCP port that the application should
+  listen on}
+}
+\value{
+  The URL used to access the application.
+}
+\description{
+  Run an application in a new process and open it in a web
+  browser
+}
+