wip: Attempting to prevent C extensions from loading on Rbx.
Fix typo in comment
Make sure we raise the exception, rather than throw it.
More updates to address the Rubinius/C-extensions bug.
Rbx seems to be broken on Travis again.
Fixed buggy extension guard.
Better warnings when loading C extensions.
Fixed broken require.
Merge pull request #153 from ruby-concurrency/native-extension-aliases

Fix bug #150 -- Erroneous C extension behavior on Rubinius.
Added building/packaging instructions to the README.
Moved build/package section in README toward bottom.
Merge pull request #151 from gmalkas/fix-comment-typo

Fix typo in comment
Merge pull request #152 from alexfalkowski/arf/raise-exception

Make sure we raise the exception, rather than throw it.
Added MIT license badge to the README.
Removed Atomic class and added a better ruby-atomic deprecation warning.
Increased version to 0.7.0
Documented pre-compiled binaries in the README.
Tweaked a sentence for clarity and a few other grammar tweaks.
Merge pull request #154 from GrooveStomp/timer-task-doc-typo

Tweaked a sentence for clarity and a few other grammar tweaks.
Doc updates