update to maven
update gitignore
update version number
allow using pages 2-5 to edit the sign instead of page 1

Books can't be edited by line, and there's no way to move the curser.
Using 1 page per line instead of 1 page for the entire sign makes it
easier to edit signs.
Merge branch 'master' of https://github.com/g-rocket/SignEdit.git

Conflicts:
	.gitignore
	pom.xml