Copy frameworks build by carthage to the target build dir, so Xcode can find them more easily (for exemple in playgrounds)

copyCarthageFrameworks.sh

#!/usr/bin/env sh

# Carthage build dirs per platform
CARTHAGE_IOS_BUILD_DIR="Carthage/Build/iOS"
CARTHAGE_MAC_BUILD_DIR="Carthage/Build/Mac"

if [ "$PLATFORM_NAME" = "iphoneos" -o "$PLATFORM_NAME" = "iphonesimulator" ]; then
    CARTHAGE_BUILD_DIR="$CARTHAGE_IOS_BUILD_DIR"
elif [ "$PLATFORM_NAME" = "macosx" ]; then
    CARTHAGE_BUILD_DIR="$CARTHAGE_MAC_BUILD_DIR"
else
    echo "unknown PLATFORM_NAME $PLATFORM_NAME"
    echo '(this script is intended to be run from a script build phase in Xcode)'
    exit 1
fi

if [ -z "$TARGET_BUILD_DIR" ]; then
    echo 'TARGET_BUILD_DIR not specified'
    echo '(this script is intended to be run from a script build phase in Xcode)'
    exit 1
fi

echo copying from $PWD/$CARTHAGE_BUILD_DIR
echo to $TARGET_BUILD_DIR
for source in "$CARTHAGE_BUILD_DIR"/*; do
    destination="$TARGET_BUILD_DIR/$(basename "$source")"
    if [ "$source" -nt "$destination" ]; then
        echo "--> rm $destination"
        rm -vrf "$destination"
        cp -vr "$source" "$destination"
    fi
done