Create host class; replace module method FFI bindings with Inline bindings
add devices and id methods to host
Add all method to device and host
add id method to device
Inline-ify stream (read/write not yet functioning)
remove FFI PortAudio bindings
Remove placeholder methods from PortAudio; refactor Host
Implement write to stream for float32 format
Test pass again; Stream struct now stores buffer as void *
Implement write to stream for int32, int16, int8, and uint8 formats (untested)
Stream buffer now viewable from Ruby
Rewrite README, remove LICENSE and remaining code from Voorhis's project