Change description of --detect to be more accurate (#550)

Co-authored-by: Steven An <[email protected]>

Author: sanmanti

README.md

@@ -52,7 +52,7 @@ python -m py_compile src/scripts/*.py && xcodebuild -target ios-deploy && xcodeb
     Usage: ios-deploy [OPTION]...
 	  -d, --debug                  launch the app in lldb after installation
 	  -i, --id <device_id>         the id of the device to connect to
-	  -c, --detect                 only detect if the device is connected
+	  -c, --detect                 list all connected devices
 	  -b, --bundle <bundle.app>    the path to the app bundle to be installed
 	  -a, --args <args>            command line arguments to pass to the app when launching it
 	  -s, --envs <envs>            environment variables, space separated key-value pairs, to pass to the app when launching it

src/ios-deploy/ios-deploy.m

@@ -2667,7 +2667,7 @@ void usage(const char* app) {
         @"Usage: %@ [OPTION]...\n"
         @"  -d, --debug                  launch the app in lldb after installation\n"
         @"  -i, --id <device_id>         the id of the device to connect to\n"
-        @"  -c, --detect                 only detect if the device is connected\n"
+        @"  -c, --detect                 list all connected devices\n"
         @"  -b, --bundle <bundle.app>    the path to the app bundle to be installed\n"
         @"  -a, --args <args>            command line arguments to pass to the app when launching it\n"
         @"  -s, --envs <envs>            environment variables, space separated key-value pairs, to pass to the app when launching it\n"