v0.0.2

This second release of mruby-cli comes in time for Madison+ Ruby (EDD) with these notable changes:

• generated mtest now actually passes. (oops)
• generated host build now has debug on by default for stack traces
• the 64 bit linux build now resides in mruby/build/x86_64-pc-linux-gnu/bin/

Thank you to @toch, @jkutner, and everyone for trying out the first release and providing feedback.