Xcode build rule for Mardown files

BuildRule.sh

# Template file with replacement tag: ${BODY}
TEMPLATE="${SRCROOT}/ShapeDemo/Template.html"

# generate and clean HTML
HTML_CONTENTS=`/usr/local/bin/markdown "${INPUT_FILE_PATH}"`
HTML_CONTENTS=`echo $HTML_CONTENTS | sed -e 's/[\/&]/\\\&/g'`

# replace into template and write to Resources
cat "$TEMPLATE" | sed "s/\${BODY}/${HTML_CONTENTS}/" > "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/${INPUT_FILE_BASE}.html"

# output file
# $(BUILT_PRODUCTS_DIR)/$(UNLOCALIZED_RESOURCES_FOLDER_PATH)/$(INPUT_FILE_BASE).html