remove dependencies to build without Coq
add Coq section to README
Use OASIS instead of omake.

Change directory layout for oasis.
Generate some build script by 'oasis setup'
remove OMakefile
remove bleis-hook script
Update test case for avoid using internal module
Add meta_conv for Msgpack
Split Msgpack and Msgpack_conv.

If meta_conv is installed, Msgpack and Msgpack_conv will be installed.
Otherwise, Msgpack only.
Add examlpe
fix README indent
prepare for 1.0.0