Add build output concat odt file

.gitignore

+*.pdf
+*.docx
+*.odt
+*.log

build.sh

+#!/usr/bin/env bash
+
+#sudo apt-get install pandoc
+cat ./README.md ./COMMON.md ./SECURITY.md ./DATABASES.md ./WEB.md ./PHP.md ./PHP-SYMFONY.md > ./test.md
+pandoc --from=markdown --to=odt --output=test.odt ./test.md
+rm ./test.md