http branch with auto-refresh command as an abstraction of http for none html renderings
handling synchronization on file and not directory
splitting between refresh and re-rendering + refreshing resources in a more clever way to avoid issues with bug resources
oops, typo in resource synchro
deleting before rendering only content files since resources should be up to date and can be big
better logging for the first rendering
basic tests for auto-refresh and html mojos
useless line
adding exit, quit, refresh commands to ease usage and force refreshing manually
adding scope to new deps
Merge branch 'http' of github.com:rmannibucau/asciidoctor-maven-plugin into rmannibucau-34

Conflicts:
	pom.xml
	src/main/java/org/asciidoc/maven/AsciidoctorHttpMojo.java
	src/main/java/org/asciidoc/maven/AsciidoctorMojo.java
	src/main/java/org/asciidoc/maven/Synchronization.java