fix build on linux :)
Initial node-ification and AMD-ification.

Wrap modules in AMD wrappers for browser-safety; move the files around
a bit to conform to standard node/volo package organization.  Add 'lzmajs'
binary (not yet working) and make test suite mocha-compatible.  Add README.
Implement decompression in lzmajs binary.
Finish implementation of lzma encoding.
Add compression-level options to lzmajs binary.
add binary compatible with the lzma-purejs binary