Update parent to latest sonatype oss parent (7)

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Added coffeescript 1.6.2

Started work on #2
https://github.com/nanoko-project/javascript-libraries/issues/2

Added coffeescript 1.6.2

Also fixed the groupId of the reactor pom

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Added the compass gem in a jar project

Discussion and decision taken on the nanoko mailing list:
https://groups.google.com/forum/?fromgroups=#!topic/nanoko/5cHsurjesDc

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>