Update POM properties
Add AssertJ
Remove String.format that GWT do not support.
Add abstract.
add line space.
New test case.
Remove default buiding from factory.
Update comment.
just for POM build.
Add assertj for unit test.
Remove m2e settings.
Update comment.
New 4 columns.
New test method.
Merge pull request #3 from haopoboy/0.1

0.1