costycnc appinventor extension

inspired from     http://kio4.com/appinventor/125B_extensiones_crear_i.htm

java               https://www.oracle.com/java/technologies/javase-jdk8-downloads.html

git                  https://git-scm.com/download/win

apache          http://ant.apache.org/bindownload.cgi

unzip apache --- remove double folder if necessary

install git