Allow static fields in value class. Allow custom setters in builder.

Merge pull request #2 from davidmorgan/minor-fixes

Allow static fields in value class. Allow custom setters in builder.

Fix error message for missing builder class. Allow non-abstract getters in value class.

Merge pull request #1 from davidmorgan/minor-fixes

Fix error message for missing builder class. Allow non-abstract getters, don't count them as fields.

Generator, tests and example.

v0.0.1

Add generator, tests and example with tests.