Update README.md
add support for supernode, which contains metadata about the file system itself (currently only the location of the root node); updated refactoring-test
update dist
fixes #77; also checked for error type to make sure the test passes for the correct reason (and not ENoEntry, for example)
remove old examples
reorganized for building
remove comments; clarify test message
Merge branch 'utimes' into develop
Merge branch 'utimes' into develop

minor correction to test description

corrected calling the callback function if failed to queue operation for utimes
Merge branch 'develop' into utimes
merged with remote