New License and Readme

• The license is MIT now and the readme looks shiny
• No more Objective-C stuff in tests (because rd_route doesn't depend on Objective-C at all 😋 )

Goodbye to old hacks

FIXED:

• a bug with __DATA segement remapping (#6)
• always ignore the leading underscore character in a symbol name

Minor code changes:

• add asserts
• replace #imports with #includes
• add extern "C" wrapper for C++ compatibility

First stable release

Update README.md

Add Travis build status badge