Update Vagrantfile and compile documentation

Android SDK module "extra-android-support" no longer exists and caused
errors during "vagrant up".

Change-Id: I5a400335c5bef4ad03135768c453d698e2c9f481
diff --git a/README.md b/README.md
index e7c7c33..d3aabf7 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@
     export ANDROID_HOME=`pwd`/android-sdk-linux
     export PATH=${PATH}:${ANDROID_HOME}/tools:${ANDROID_HOME}/platform-tools
 
-    echo "y" | android update sdk --filter platform-tools,build-tools-$BUILD_TOOLS_VERSION,android-$COMPILE_SDK_VERSION,extra-android-support,extra-android-m2repository,extra-google-m2repository --no-ui --all --force
+    echo "y" | android update sdk --filter platform-tools,build-tools-$BUILD_TOOLS_VERSION,android-$COMPILE_SDK_VERSION,extra-android-m2repository,extra-google-m2repository --no-ui --all --force
     echo "y" | android update sdk --filter "android-19" --no-ui --all --force
 
 To create prebuilt OpenSSL libraries: