v0.1

- Implemeted rd_duplicate_function() for remapping function
implemetation (i.e an image which contains this function) to another
address.
Rewrite rd_route() as a wrapper over rd_duplicate_function();

- Refactor _remap_image() to take an image and its vm slide as arguments
and to return a new address for this image via `target` in/out
argument;

- Rename rd_route.m to rd_route.c because it doesn't actually contain
any Objective-C code, so don't mess it up.

 - Update Rakefile for tests to handle rd_route.c file