try fix travis

scripts/env/installAndroidSDK.sh

 # copy licenses
 echo "Copying Android licenses"
 mkdir -p "${ANDROID_HOME}"/licenses
-scriptdir=`dirname "$BASH_SOURCE"`
+scriptdir=$(cd `dirname $0`; pwd)
+# scriptdir=`dirname "$BASH_SOURCE"`
 cp "$scriptdir/android-sdk-licenses/*" "${ANDROID_HOME}"/licenses