Document the -g option to adb install.

Change-Id: I012165df343c24953f1c1cfcdce379bf1b67c624
diff --git a/commandline.cpp b/commandline.cpp
index cef5f39..909592d 100644
--- a/commandline.cpp
+++ b/commandline.cpp
@@ -145,8 +145,8 @@
         "                               - remove a specific reversed socket connection\n"
         "  adb reverse --remove-all     - remove all reversed socket connections from device\n"
         "  adb jdwp                     - list PIDs of processes hosting a JDWP transport\n"
-        "  adb install [-lrtsd] <file>\n"
-        "  adb install-multiple [-lrtsdp] <file...>\n"
+        "  adb install [-lrtsdg] <file>\n"
+        "  adb install-multiple [-lrtsdpg] <file...>\n"
         "                               - push this package file to the device and install it\n"
         "                                 (-l: forward lock application)\n"
         "                                 (-r: replace existing application)\n"
@@ -154,6 +154,7 @@
         "                                 (-s: install application on sdcard)\n"
         "                                 (-d: allow version code downgrade)\n"
         "                                 (-p: partial application install)\n"
+        "                                 (-g: grant all runtime permissions)\n"
         "  adb uninstall [-k] <package> - remove this app package from the device\n"
         "                                 ('-k' means keep the data and cache directories)\n"
         "  adb bugreport                - return all information from the device\n"