Adds macro with basic static method support. Refs #1.
Adds basic example using macros. Refs #1.
Splits objc code into separate files. Refs #1.

Importing an external header is more usual than the default example of
emitting objc code directly from nimrod.
Merge branch 'feature/t1_support_static_methods' into develop
Documents recent changes. Refs #1.
Adds babel file and nake task for installation. Refs #2.
Adds basic documentation. Refs #4.
Adds greeter readme. Refs #4.
Adds release steps. Refs #4.
Marks task in changes log. Refs #4.
Merge branch 'feature/t4_basic_docs' into develop
Updates version numbers for 0.2.0 release. Refs #5.
Merge branch 'release/0.2.0'