Make a proper build path.

I have tested this on Linux Mint with Lua 5.1 and the latest libcouchbase. I did not make it dependent on the existing makefiles, so I expect it to be portable to all Lua environments.

The tag `v1.0.0` will need to be created before this can be deployed.

This does not resolve the dependencies by itself. Event and libcouchbase must be installed separately.