Crittercism Auto-Upload dSYM with API Key as an environmental variable

xcode_build_phase.sh

# only upload during Release builds, otherwise every build will upload a dSYM
if [ "${CONFIGURATION}" = "Release" ]; then
    # put the secret key in this file as an environmental variable
    if [ -f ~/.crittercism_keys ]; then
	# this is required to inject the environmental variables into the shell spawned by Xcode
        source ~/.crittercism_keys

        APP_ID="MY_FIRST_APP_ID_abcdefghi"

	# instead of having your API key here, it is copied in from the environmental varible
        API_KEY=${MINI_AUDICLE_SECRET_KEY}

	# run the script
        source "${SRCROOT}"/ios/libs/Crittercism/dsym_upload.sh
    else
        echo "~/.crittercism_keys does not exist. Not uploading dSYM!"
    fi
else
    echo "Not a Release build so not auto-uploading dSYM file."
fi