Cleanup the android scripts.

platform_tools/android/bin/android_install_app

Index: platform_tools/android/bin/android_install_app
diff --git a/platform_tools/android/bin/android_install_apk b/platform_tools/android/bin/android_install_app
similarity index 91%
rename from platform_tools/android/bin/android_install_apk
rename to platform_tools/android/bin/android_install_app
index 9161bbb41c3291f504e0260c667708a7cda4857d..b43b77d69eb29ab934a0cd12cef4005538f3d1a1 100755
--- a/platform_tools/android/bin/android_install_apk
+++ b/platform_tools/android/bin/android_install_app
@@ -1,9 +1,9 @@
 #!/bin/bash
 #
-# android_install_skia: installs the skia apk on the device.
+# android_install_app: installs the skia sampleApp on the device.
 
 function print_usage {
-  echo "USAGE: android_install_skia [options]"
+  echo "USAGE: android_install_app [options]"
   echo " Options:         -f  Forces the package to be installed by removing any"
   echo "                      previously installed packages"
   echo "                  -h  Prints this help message"