typos corrected
Merge pull request #191 from Helpstone/master

typos corrected
pom's were still pointing to rc1-snapshot
Merge pull request #192 from Helpstone/master

pom's were still pointing to rc1-snapshot
IZPACK-980: Added missing definition for refpack and refpackset
attribut "includes" is required
element <pack> is optional
Merge pull request #193 from Helpstone/IZPACK-980

Izpack 980