released archetype-plugins for slim3-1.0.16, appengine-1.7.5
Added appengine-maven-plugin and changed project structure.
Added .gitignore to eclipse generated files.
Merge pull request #1 from vvakame/archetype-update

Updated archetype-plugins for slim3-1.0.16, appengine-1.7.5
Merge pull request #2 from vvakame/add-appengine-maven-plugin

Added appengine-maven-plugin and changed project structure.
Merge pull request #3 from vvakame/add-gitignore

Added .gitignore to eclipse generated files.
Updated dependency appengine and gwt version.
Merge pull request #4 from vvakame/update-version

Updated dependency appengine and gwt version.
Removed files that generated.
Updated .gitignore, add ignore for maven metafiles.
Changed the setting so that the environment close to the original environment.
Merge pull request #5 from vvakame/rm-metafile

Rm metafile